the ratio of the 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
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hi Henry,
let their present ages be x and y
The ratio of the present ages of two brothers is 1:2
x/y = 1/2
2x = y
5 years back the ratio was 1:3
x-5 / y-5 = 1/3
3(x-5) = y-5
3x-15 = y-5
3x = y-5+15
3x = y+10
substitute y=2x
3x = 2x + 10
x = 10
so
y = 2x = 2*10
y = 20
Hence their present ages are 10 years and 20 years
Hope it helped
Let me know if any further doubts
Cheers !!!
let their present ages be x and y
The ratio of the present ages of two brothers is 1:2
x/y = 1/2
2x = y
5 years back the ratio was 1:3
x-5 / y-5 = 1/3
3(x-5) = y-5
3x-15 = y-5
3x = y-5+15
3x = y+10
substitute y=2x
3x = 2x + 10
x = 10
so
y = 2x = 2*10
y = 20
Hence their present ages are 10 years and 20 years
Hope it helped
Let me know if any further doubts
Cheers !!!
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