Problema Solution
Pg.6
write a proportion and answer each question using the conversion factor 1 inch= 2.54 centimeters.
a. John is 78 1/4 inches tall. How many centimeters tall is she?
Answer provided by our tutors
let 'x' be the height of John in cm
1 inch to 2.54 centimeters = 78 1/4 inches to x cm
78 1/4 = 78 + 1/4 = 78.25
1 : 2.54 = 78.25 : x
by solving we find
x = 198.755 cm
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John is 198.755 cm tall.