Multiple choice

Two friends have money in the ratio 3 : 7. The difference between their amounts is Rs. 20. Find the total amount of money with both the friends.

  1. Rs. 50

  2. Rs. 60

  3. Rs. 75

  4. Rs. 45

  5. Rs. 35
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A Correct answer
Explanation

Let the amounts be 3x and 7x. The difference is 7x - 3x = 4x = 20, so x = 5. The total amount is 3x + 7x = 10x = 10 * 5 = 50.

AI explanation

The difference in ratio units is 7 minus 3, which equals 4 units. Since 4 units represent Rs. 20, one ratio unit equals Rs. 5. The total amount is 3 plus 7, which is 10 units, so multiplying 10 by 5 gives the total of Rs. 50.

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