Question

the age of A&B are in the ratio 2:6 after 5 year the ratio of their age will become 6:8 .the average of their age after 10 year will be​

Answer 1

Answer:

12

Step-by-step explanation:

Let the age of A be a and the age of B be b.

a/b = 2/6

a/b = 1/3

b = 3*a

(a+5)/(b+5) = 6/8 = 3/4

4*a +20 = 3*b + 15

Substituting b=3a,

4*a +20 = 9*a +15

5*a = 5

a=1 and b=3

After ten years,

a=10+1=11

b=10+3=13

average=(13+11)/2

avg=24/2

     =12