RATIOS 3

Given the ratios U:V = 9: 8 and V:W = 20:7 Find the ratio U:W.

solution

U = U x V

W   V   W

U =   9 x 20⁵

W   ₂ 8    7

U =   9 x 5

W       2 x 7

U =   45

W     14

Hence U:W = 45:14

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Given the ratios D:E = 5:7 and E:F = 3:15;  Find the ratio D:F.