Question

An inch is equal to about 2.54 centimeters. Write an expression which estimates the number of centimeters in x inches. Then estimate the number of centimeters in 12 inches.

Answer 1

If 1 inch = 2.54 cm, then 12 inches = x cm
x/12in = 2.54cm/1in
12(x/12 = 2.54cm)
x =2.54cm x 12
x = 30.48