Question

if a:b = 5:7 and b:c = 14:15 find a:c

Answer 1

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Answer 2

given a: b = 5 : 7

a / b = 5 / 7 -----(1)

b : c = 14:15

b / c = 14 / 15----(2)

multiply equation (1) and eq.(2)

a / b × b / c = 5 / 7 × 14 / 15

a / c = 5× 2 /15

a /c = 2 / 3

hence a : c =2 :3

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