Question

The ratio of the width to the length of a painting is 3 to 7. If the painting is 43 inches long, how wide is it?

Answer 1

width / length = width / length
       3/7          =      w / 43

3/7 = w/43
cross multiply
(7)(w) = (3)(43)
7w = 129
w = 129/7 or 18 3/7 <==