Question

10 years ago A's were half of B's ​​age. If their ratio is 3: 4, what is the sum of their age ??
A) 20 B) 14 C) 35 D) 30​

Answer 1

Answer:

Answer is 14

Step-by-step explanation:

(A - 10) = 2(B - 10)

A - 10 = 2B - 20

A + 10 / 2 = B

A/B = 3/4 ---1

4A = 3B

4A = 3(A + 10 / 2)

8A = 3A + 30

5A = 30

A = 6

4*6 = 3B --- (from 1)

8 = B

A + B = 14