**Mark Scheme**

**Working**

4) Patrick writes down a number.

He says

"If I find the square root of that number and then add 15, I get 27."

What number did Patrick write down?

**Question**

4) Patrick writes down a number.

He says

He says

"If I find the square root of that number and then add 15, I get 27."

What number did Patrick write down?

**[2 marks]**