Question

Alan is 77 inches tall. He casts a shadow 14 feet long. His dad casts a 12-foot shadow at the

same time. How much shorter is Alan's dad than Alan? Draw a picture before you begin!

Answer 1

66 inches

Explanation:

77→ 14

X→12

In the proportion

a/b=c/d

the product of the means equals the product of the extremes. That is,

ad=bc.

So,

77 * 12 = X * 14

x = (77 X 12) / 14 = 66