Question

a number is as much greater than 21 as is less than 71.find the number

Answer 1

Let the no. be x
then
x +21=71-x

2x=50

x=25

Answer 2

Let the no. be x
.°.ATQ
x-21=71-x
=>x+x=71+21=92
=>2x=92
=>x=92/2=46