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1. Rahim has three times as much money as Karim has . If Rahim Tk. 50 then Karim will have three times as much money as Rahim will have . How much money do they have together?
- A. 75
- B. 75
- C. 75
- D. 75
Answer: Option B
Explanation:
Case 1: Rahim has three times as much money as Karim has.
let, karim's money = x, so rahim's money = 3x
Case 2: If Rahim gives Karim TK.50 then Karim will have three times as much money as Rahim will have.
After the condition - Rahim gives Karim TK.50
Karim's money = x + 50 & rahim's money = 3x - 50
After the condition - Karim will have three times as much money as Rahim will have,
karim's maney = 3 * rahim's money
or, x + 50 = 3(3x - 50)
or, x + 50 = 9x - 150
or, 8x = 200
so, x = 25
So, The money do they have together is: x + 3x = 4x = 4*25 = 100
Answer: 100
let, karim's money = x, so rahim's money = 3x
Case 2: If Rahim gives Karim TK.50 then Karim will have three times as much money as Rahim will have.
After the condition - Rahim gives Karim TK.50
Karim's money = x + 50 & rahim's money = 3x - 50
After the condition - Karim will have three times as much money as Rahim will have,
karim's maney = 3 * rahim's money
or, x + 50 = 3(3x - 50)
or, x + 50 = 9x - 150
or, 8x = 200
so, x = 25
So, The money do they have together is: x + 3x = 4x = 4*25 = 100
Answer: 100
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