Question

if a:b=6:7and b:c=8:9,a:c ? if ans = 16:21 .what is the method?​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Proportional reasoning

Step-by-step explanation:

6/7 = 8/9

6(9) = 8(7)

54 = 56

a = 6

c = 9

6/9 = a:c

6/9 = 2/3

2/3 = x/21

2(21) = 3x

42 = 3x

14 = x