Question

11 more than five of a certain number is twenty more than 2 times of that number.What is the number?

Answer 1

Let the no. be y
--- 11 + 5y = 20 + 2y
--- 3y = 9
--- y = 3
--- Required no. is 3

Answer 2

he question should be "11 more than five times of a certain number is twenty more than 2 times of that number.What is the number?"

Let the number = x
according to question,
(11 + 5x) - 2x = 20
⇒ 11 + 5x - 2x = 20
⇒ 3x = 20 - 11 
⇒ 3x = 9
⇒ x = 9/3
⇒ x = 3

number is 3