Question

Radha multiplies a certain number by 11, adds 5 to the product and gets 225. find that number in simple equation

Answer 1

let the number be a.
11a + 5 = 225
11a = 225 - 5 = 220
a = 220 / 11
divide 220 by 11 and you'll get the answer

Answer 2

let x be the number then,
x*11+5=225
= x*11=225-55
= x*11=220
= x=220/11
= x=20
.
therefore, answer is 20