Question

A number is divided into two parts , one part being 4 times the other. The difference between the two parts is 15. What is the number ?

Answer 1

hey mate
I am lokesh
let first part be x therefore second part is 4x
4x-x=15
x=15/3=5(first part) 
2nd part=4x=20
therefore required no. =20+5=25
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Answer 2

let x and y be the two parts then

x=4y and x-y=15
so we get
3y=15
y=5

so x=4*5=20

therefore number is x+y= 25

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