Question

The ages of A and B are in the ratio 2 : 5 after 6 years their ages will be 1:2
what is present age
(a) 20 years
(b) 24 years
(d) 36 years
(c) 30 years

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Answer 1

Answer:

A's age =12; B's=30

Step-by-step explanation:

let the ages of A and B be 2x and 5x

(2x+6)/(5x+6) = 1/2 (we will and 6 as after 6years )

2(2x+6) = 1(5x+6) ( cross multiplication method )

4x+12 = 5x+6

4x-5x = 6-12 ( variables on LHS and constants on RHS)

-x= -6 ( - is cancelled from both the sides)

x=6

A ) 2x =2×6

=12

B )5x=5×6

=30

Thus , the age of A is 12 and age of B is 30

hope it may help you