Question

A number is divided into two parts such that one part is 20 more than other.If the parts are in the ratio 7:2 find the number and two parts.

Answer 1

Answer:

let the 1st part of the number is x

then 2nd part is x+20

so,

x+20 : x= 7 : 2

=> (x+20)/x=7/2

=> 7x=2(x+20)

=> 7x=2x+40

=> 7x-2x=40

=> 5x=40

=> x=40/5

=> x=8

so one part is 8 and another part is 8+20=28