Question

Two numbers are such that the ratio between them is 3:5 . If ech increased by 10 , the ratio between the new number so formed is 5:7 . Find the original number.
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Answer 1

Answer:

let the numbers be 3x and 5 x.

then,. 3x+10/5x+10=5/7

by cross multiplication,

we get x=5.

putting the value of x in 3x and 5x ,

we get the original numbers..ie,

15 and 25.