Question

2/3 of a number is less than the original no. by 20. find the number?

Answer 1

let the number is x
2/3 of the number = 2x/3
2/3 of a number is less than the original no . by 20

x-2x/3 =20
(3x-2x)/3 =20
x/3=20
x= 3*20
x= 60
the number = x =60

Answer 2

this means that x-2x/3=20

1x/3=20

x=20^3

x=60