3061 . A train travels 10 miles at a speed of 50 miles per hour. How fast must the train teavel on the reture trip if the round-trip travel time is 20 minutes?

A. 55 miles/hours
B. 60 miles/hours
C. 75 miles/hours
D. 65 miles/hours

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Answer: Option C

Explanation:

বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020

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

3062 . A tank that was 10% full was emptied into a 50-litre bucket.If the oil now fills 40% of the bucket’s volume. Then what is half of the capacity of the tank in liters?

A. 50 liters
B. 100 liters
C. 150 liters
D. 200 liters
E. None

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Answer: Option B

Explanation:

পায়রা বন্দর কর্তৃপক্ষ (বিভিন্ন পদ) 06-11-2020

A. 3%
B. 4%
C. 5%
D. 6%

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Answer: Option D

Explanation:

Hints: Simple interest, I = Pnr (15500 - 12500) = 12500 × 4 × r r = 3/50 rate = 3/50 × 100% = 6 %

C ইউনিট ব্যবসা শিক্ষা (২০২৩-২০২৪) || (09-03-2024) || চট্টগ্রাম বিশ্ববিদ্যালয়

A. 10
B. 20
C. 40
D. 73

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Answer: Option C

Explanation:

নম্বর বেশি=83-63=20 প্রশ্নমতে, 0.5 অংশ বৃদ্ধি =20 1 অংশ বৃদ্ধি = \frac{20}{0.5} =40 ছাত্র= ছাত্রীর সংখ্যা=40

তিতাস গ্যাস ট্রান্সমিশন অ্যান্ড ডিস্ট্রিবিউসন কো. লি.-সহকারী ব্যবস্থাপক-08-10-2021

A. 3
B. 4
C. 5
D. 6

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Answer: Option C

Explanation:

Hints: As their profit is equal at the end of the year, their ratio is equal to their capital ratio oppositly

Their capital ratio is = 21000 : 36000 = 21 : 36 = 7 : 12

So, their time ratio is equal to 12 : 7

A has contributed for 12 months

and B contributed for 7 months

So, B has joined after 12 - 7 = 5 months.

পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. 0.56
B. 0.76
C. 0.34
D. 0.66

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Answer: Option D

Explanation:

4 টি ক্লাসে মোট ছাত্র আছে=10+20+30+40=100জন ১ম ক্লাসে পাশ করে 10 এর 20%= 2 জন ২য় ক্লাসে পাশ করে 20 এর 30%=6 জন ৩য় ক্লাসে পাশ করে 30 এর 60%=18 জন ৪র্থ ক্লাসে পাশ করে 40 এর 100%=40 জন মোট পাশ করে =2+6+18+40=66 জন শতকরা পাশ করে= (\frac{66}{100} ×100%) =66%

বাংলাদেশ রপ্তানি প্রক্রিয়াকরণ কর্তৃপক্ষ (সহকারী ম্যানেজার) 02-04-2021

A. 150
B. 148
C. 151
D. 174

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Answer: Option D

Explanation:

সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

A. 253
B. 252
C. 145
D. 370

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Answer: Option A

Explanation:

253 + 99 = 352, The number of are reversed.

সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

A. 18
B. 24
C. 36
D. 45

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Answer: Option B

Explanation:

লোকটি প্রথম 2 ঘণ্টা অতিক্রম করে = 30 × 2 = 60 মাইল ∴ Average speed = মোট দূরত্ব / মোট সময় = ( 60 + 60)/(2 + 3) = 120/5 = 24 mph

C ইউনিট ব্যবসা শিক্ষা (২০২৩-২০২৪) || (09-03-2024) || চট্টগ্রাম বিশ্ববিদ্যালয়

A. 10
B. 12
C. 14
D. 16

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Answer: Option D

Explanation:

A. 60 kmph
B. 55 kmph
C. 63 kmph
D. 57 kmph

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Answer: Option C

Explanation:

To calculate the speed of the train, we can use the information that the man can count 21 telephone posts in one minute and that the posts are known to be 50 meters apart. This means that in one minute, the train travels a distance equal to the spacing between 21 telephone posts.

Distance traveled in one minute = 21 posts * 50 meters/post = 1050 meters

Since there are 60 seconds in a minute, we need to convert the distance to meters per second:

Speed (in meters per second) = Distance (in meters) / Time (in seconds) Speed = 1050 meters / 60 seconds = 17.5 meters/second

To express the speed in kilometers per hour (km/h), we can multiply by 3.6 (since 1 meter per second is equal to 3.6 kilometers per hour):

Speed = 17.5 meters/second * 3.6 km/h = 63 km/h

So, the speed of the train is 63 kilometers per hour.

সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021

A. Tk. 1,090
B. Tk. 1,160
C. Tk. 1,190
D. Tk. 1,202

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Answer: Option C

Explanation:

C ইউনিট ব্যবসা শিক্ষা (২০২৩-২০২৪) || (09-03-2024) || চট্টগ্রাম বিশ্ববিদ্যালয়

A. 50 units
B. 60 units
C. 70 units
D. 80 units
E. None

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Answer: Option E

Explanation:

পায়রা বন্দর কর্তৃপক্ষ (বিভিন্ন পদ) 06-11-2020

A. 588 apples
B. 600 apples
C. 672 apples
D. 700 apples

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Answer: Option D

Explanation:

C ইউনিট ব্যবসা শিক্ষা (২০২৩-২০২৪) || (09-03-2024) || চট্টগ্রাম বিশ্ববিদ্যালয়

A. 8:5
B. 9:7
C. 9:5
D. 8:7

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Answer: Option C

Explanation:

খরগোশের ৩ লাফ= কুকুরের ১ লাফ " ১ " = " ১ \times \frac{১}{৩} " " ৫ " = " \frac{৫}{৩} " তাহলে, খরগোশের গতিবেগঃকুকুরের গতিবেগ =৩ঃ \frac{৫}{৩} =৯ঃ৫

3061 . A train travels 10 miles at a speed of 50 miles per hour. How fast must the train teavel on the reture trip if the round-trip travel time is 20 minutes?

3062 . A tank that was 10% full was emptied into a 50-litre bucket.If the oil now fills 40% of the bucket’s volume. Then what is half of the capacity of the tank in liters?

3063 . A sum of Tk. 12,500 amounts to Tk. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?

3064 . A student's marks were wrongly entered as 83 instead of 63. Due to the error the average marks for the class got increased by 0.5. Find the number of students in the class.

3065 . A started a business with tk 21000 and is joined afterwards by B with tk 36000. After how many months did B join if the profits at the end of the year are divided equally?

3066 . A school has only four classes having 10, 20, 30 and 40 students respectively with pass percentage of 20%, 30%, 60% and 100% respectively. Find the pass-percentage of the entire school.

3067 . A number x is divided by 7. When this number is divided by 8, 12 and 16 . It leaves a remainder 3 in each case . The least value of x is?

3068 . A number consists of 3 digits hose sum is 10 . The middle digit is e3qual to the3 sum of the other two and the number will be increased by 99 if its digits are recersed. The number is-

3069 . A man travels for 2 hours at 30 miles an hour and then covers 60 miles in the next 3 hours. What is the average rate for the entire journey?

3070 . A man travelled a distance of 61 kn in 9 jours. He travelled party on food at 4 kn/hr and party on bicycle at 9 km/hr. What is the distance (in km) travelled on foot?

3071 . A man in a train notice that he can count 21 telephone posts in one minute.. If they are known to be 50 meters apart, then at what speed is the train travelling?

3072 . A man buys a cycle for Tk. 1,400 and sells it at a loss of 15%. What is the selling price of the cycle?

3073 . A machine can produce 10 units in 5 hours. Another machine can produce 5 units in 10 hours. Working together, how many units can they produce in 30 hours?

3074 . A fruit seller had some apples. He sells 40% apples and still has 420 apples. How many apples he had at the begining?

3075 . A dog takes 3 leas for every 5 leaps of a hare. If one leap of the dog is equal to 3 leaps of the hare, the ratio of the speed of the dog to that of the hare is:

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