Four numbers are in the ratio of 7 : 8 : 9 : 10. Sum of these numbers is 68. What will be the sum of the first and fourth numbers?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 34.
The ratio of the four numbers = 7 : 8 : 9 : 10
The sum of these four numbers = 68
⇒ 7x + 8x + 9x + 10x = 68
⇒ 34x = 68
⇒ x = 2
First number = 7x = 14
Fourth number = 10x = 20
Required sum = 14 + 20 = 34