Question

Ahmed plans to add a rectangular sunroom to his house. The sunroom will have a length of 14 feet and a width of 10 feet, and the construction will cost $40 per square foot. How much more would the sunroom cost if it’s width were increased to 12 feet?

Answer 1

$1120 more.

Explanation:

14 x 10 = 140

140 x $40 = $5600

10 + 2 = 12

14 x 12 = 168

168 x $40 = $6720

$6720 - $5600 = $1120

Answer 2

$1120 more

Explanation:

Given length = 14 feet

breadth = 10 feet

Therefore, area of the sun room is = length x breadth

= 14 x 10

= 140 square foot

Cost of one square foot = $40

∴ Cost of 140 square foot is = 140 x 40 = $5600

Now when the width is increased to 12 feet.

New area of the sun room is = length x breadth

= 14 x 12

= 168 square foot

We know, Cost of one square foot = $40

∴ Cost of 140 square foot is = 140 x 40 = $6720

Therefore increased cost is $ ( 6720 - 5600 )

= $ 1120