Question

the ratio of present ages of two brothers is 1:2 and 5 years back the ratio was 1:3. what will be the ratio of their ages after 5 years ?
plzzzzzz answer this question fastly

Answer 1

given ratio of present age= 1:2
let ages be x,2x
5yrs back ratio was 1:3
so 5yrs back ages be x-5/2x-5 = y/3y
so after 5 yrs ages are x+5/2x+5
by solving we get 1st age = 10yrs ,2nd age = 20yrs.
so after 5yrs ratio = x+5/2x+5 = 15/25 = 3/5 = 3:5

Answer 2

Hi !

Let their present ages be x and 2x 
The ratio of their ages five years before is 1/3

their ages 5 yrs before are x -5 and 2x - 5

i.e.,

x-5/2x- 5 = 1/3

cross multiply ,

2x - 5 = 3x - 15

x = 10

2x = 20

their present ages are 10 and 20 respectively.
Their ages 5 years later are 15 and 25 years.

Ratio of ages 5 yrs later = 15/25 = 3/5 = 3:5

Hope this Helps You !