Question

Ratio of two numbers is 3:5 and difference of their cubes is 748

Answer 1

let the two nos be 3x and 5x

a q

(5x )^3-(3x)^3=784

125x cu.-27x cu. =784

98x^3=784

×^3=8

x=2

the nos are

3x=6

5x=10

sum=3x+5x=6+10=16