781 . A class of 120 has 25% girls. If 10% of the boys and 20% of the girls attended a picnic then what percentage of the class attended the picnic?

A. 20%
B. 25%
C. 13%
D. 12.5%
E. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

Total students = 120

number of girls = 120*25% = 30

number of boys = (120 - 30) = 90

munber of students attended picnic = 90*10% + 30*20% = 6 + 4 = 15

% of students attended picnic = 15/120*100 = 12.5

ans: 12.5%

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

782 . A class of 50 girls and 70 boys sponsored a party. If 40% of the girls and 50% of the boys attended the party, approximately what percent of the class attended?

A. 40
B. 42
C. 44
D. 46

View Answer	Favorite Question

Answer: Option D

Explanation:

First, we need to find out 40% of the 50 girls. That is 50 x 0.4 = 20 girls.

Next, we need to find out 50% of the 70 boys. That is 70 x 0.5 = 35 boys.

Therefore, 20 + 35 = 55 people attended.

In total there were 50 + 70 = 120 people.

So the percent would be 55/120 = 11/24 ≈ 45.83% ≈ 46%.

783 . A class of 80 students has 25% girls. If 10% of the boys and 20% of the girls attended a picnic then what percentage of the class attended the picnic ?

A. 20%
B. 25%
C. 13%
D. 12.5%
E. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

25% of 80=20

So,

Girls=20

Boys=80-20=60

10% of 60=6

20% of 20=4

Total students=80, Students in picnic=6+4=10

Now,

(10×100)/80=12.5%

784 . A clock falls behind 10 minutes each day. How many days will it take to reach a point where the clock will indicate the correct time?

A. 36
B. 40
C. 72
D. 90

View Answer	Favorite Question

Answer: Option C

Explanation:

Loss time for every day 10 min

Loss time for 6 days is 6×10 min = 60 min = 1 hours

i.e For every 6 days hour hand clock back 1 h

We know there are 12h in a clock

If the chock 12 backed then it will give us real time

So required time for showing real time is = 6×12 = 72 days

Ans. 72 days

785 . A clock is started at noon. By 10 minutes past 5, the hour hand has turned through :

A. 145 degree
B. 150 degree
C. 155 degree
D. 160 degree

View Answer	Favorite Question

Answer: Option C

Explanation:

Hints: Angle traced by hour hand is 12 hrs = 360degree

Angle traced by hour hand in 5 hrs 10 min i.e, 31/6 hrs

= 360/12 × 31/6

= 155 degree

786 . A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?

A. 36
B. 72
C. 120
D. None of these

View Answer	Favorite Question

Answer: Option B

Explanation:

Loss time for every day 10 min

Loss time for 6 days is 6×10 min = 60 min = 1 hours

i.e For every 6 days hour hand clock back 1 h

We know there are 12h in a clock

If the chock 12 backed then it will give us real time

So required time for showing real time is = 6×12 = 72 days

Ans. 72 days

Bangladesh Bank - Officer - 2001

A. 3:15
B. 7:15
C. 8:45
D. 9:45

View Answer	Favorite Question

Answer: Option C

Explanation:

Here, mirror ttime is = 3:15

So, Real time = 11:60-3:15 .(where 11-3 & 60-15)= 8:45

সমন্বিত ৭ ব্যাংক || অফিসার (ক্যাশ) (24-05-2024)

A. 3:15
B. 7:15
C. 8:45
D. 9:45

View Answer	Favorite Question

Answer: Option C

Explanation:

Here, mirror ttime is = 3:15

So, Real time = 11:60-3:15 .(where 11-3 & 60-15)= 8:45.

সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 3:15
B. 7:15
C. 8:45
D. 9:45

View Answer	Favorite Question

Answer: Option C

Explanation:

Here, mirror time is = 3:15

So, Real time = 11:60-3:15 .(where 11-3 & 60-15)= 8:45.

NRBC Bank PLC || Trainee Assistant Officer (TAO) (26-10-2024) || 2024

A. 24 days
B. 30 days
C. 60 days
D. 60 hours

View Answer	Favorite Question

Answer: Option C

Explanation:

1 hour = 60 min

24 hour = 1 day

Clock slows down by 1 min in 1 day

So, clock slows down by 60 min in 60 days.

791 . A cloth merchant has announced 25% rebate in price. If one needs to have a rebate of Tk.40 then how many shirts each costing Tk.32, he should purchage?

A. 10
B. 7
C. 6
D. 5

View Answer	Favorite Question

Answer: Option D

Explanation:

792 . A club collected exactly Tk. 599 from its members. If each member contributed at least Tk. 12, what is the largest numbers the club could have?

A. 43
B. 44
C. 49
D. 50

View Answer	Favorite Question

Answer: Option C

Explanation:

We can find out the largest number of members when everyone is contributing the least amount, which is 12 taka.

So, 599/12≈49

793 . A club has 3 boys and 5 girl during a membership drive the same number of boys and girl joined the club. How many members does the club has now if the rate of boys to girl is 3:4

A. 12
B. 13
C. 14
D. 15

View Answer	Favorite Question

Answer: Option C

Explanation:

794 . A co-operative collected Tk.5000 from its members. If each member contributed at least Tk.240. What is the greatest number of members that the co-operative could have?

A. 20
B. 21
C. 19
D. 22

View Answer	Favorite Question

Answer: Option B

Explanation:

If each member contributed the minimum 240 TK, the number of members will be the greatest.

So, the greatest number of members possible = 5000/240 ≈ 20

795 . A coat was sold for TK. 75. The coat was sold for 150% of the cost of the coat. How much did the coat cost ?

A. TK. 150
B. TK. 45
C. TK. 50
D. TK. 60
E. None of these

View Answer	Favorite Question

Answer: Option C

Explanation:

Given that, 150% = 75

= > 1 % = 75/150

= > 100% = 75/150 * 100 = 50

therefore, the coat cost = 50 tk.

781 . A class of 120 has 25% girls. If 10% of the boys and 20% of the girls attended a picnic then what percentage of the class attended the picnic?

782 . A class of 50 girls and 70 boys sponsored a party. If 40% of the girls and 50% of the boys attended the party, approximately what percent of the class attended?

783 . A class of 80 students has 25% girls. If 10% of the boys and 20% of the girls attended a picnic then what percentage of the class attended the picnic ?

784 . A clock falls behind 10 minutes each day. How many days will it take to reach a point where the clock will indicate the correct time?

785 . A clock is started at noon. By 10 minutes past 5, the hour hand has turned through :

786 . A clock loses ( falls behind ) 10 minutes each day. How many days will take to reach a point where the clock will indicate the correct time ?

787 . A clock seen through a mirror, shows quarter past three. What is the correct time shown by the clock?

788 . A clock seen through a mirror, shows quarter past three. What is the correct time shown by the clock?

789 . A clock seen through a mirror, shows quarter past three. What is the correct time shown by the clock?

790 . A clock slows down one minute every 24 hours. How long will it take to slow down by one hour?

791 . A cloth merchant has announced 25% rebate in price. If one needs to have a rebate of Tk.40 then how many shirts each costing Tk.32, he should purchage?

792 . A club collected exactly Tk. 599 from its members. If each member contributed at least Tk. 12, what is the largest numbers the club could have?

793 . A club has 3 boys and 5 girl during a membership drive the same number of boys and girl joined the club. How many members does the club has now if the rate of boys to girl is 3:4

794 . A co-operative collected Tk.5000 from its members. If each member contributed at least Tk.240. What is the greatest number of members that the co-operative could have?

795 . A coat was sold for TK. 75. The coat was sold for 150% of the cost of the coat. How much did the coat cost ?

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক