Question

You have a pool that measure 8 yards by 10 yards. You want to build a deck around your pool of uniform width increasing the total area of the pool to 120 square yards. What is the width of the deck

Answer 1

Let x be the width increased. New measure of pool = (x+8) and (x+10). Total area = 120. So the following question can be set:
(x+8)(x+10) = 120
Can you solve it?

Answer 2

i dont rlly kno how..

Answer 3

Can you expand the expression on the left, that is (x+8)(x+10) ?

Answer 4

Hint: break the bracket:
(x+8)(x+10)
= x(x+10) + 8(x+10)
= ...?

Answer 5

okay i got it now thank you:)

Answer 6

Welcome!