Sarah’s collection contains dresses, skirts and blouses. If the ratio of dresses to skirts is 7 to 4 and the ratio of skirts to blouses is 7 to 2, what is the ratio of dresses to blouses?
Skirts are common in both ratios.
Multiply both ratios by the factors such that skirts are represented by the same number
Dresses: skirts = 7: 4
Skirts: blouses = 7: 2
Multiply the first by 7 and the second by 4.
Therefore:
Dresses: skirts = 49: 28
Skirts: blouses = 28: 8
[Skirts are represented by the same number: 28]
Therefore, when we combine the two ratios, we find that the ratios of dresses to blouses is 49:8
GW
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