We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.

+0

# Word problem help?

0
348
1

Mattress A is 20 inches longer than it is wide. Mattress B is 16 inches wider than mattress A but still has the same length. The area of mattress B is 1280  Square inches more than that of mattress A.

What equation can be used to determine the area of mattress B?

Also determine the dimensions of mattresses B and mattress A.

Mar 23, 2018

### 1+0 Answers

#1
+1

Let the width of Mattress A  = W
The length of Mattress A     = W + 20
The width of Mattress B      = W + 16
W x [W + 20] = [W + 16] x [W + 20] - 1280, solve for W

W^2 + 20 W + 1280 = W^2 + 36 W + 320
W = 60 inches - width of mattress A
60 + 20 = 80 inches - length od Mattress A
60 + 16 = 76 inches - width of Mattress B
60 + 20 = 80 inches - length of Mattress B

Mar 23, 2018
edited by Guest  Mar 23, 2018