Question

If A:B=7:9, B:C=6:7 find A:C

Answer 1

Answer:

2:3

Step-by-step explanation:

A:B      B:C

7:9       6:7

You want B in both ratios to be the same so you multiply them to find a common multiple

A:B         B:C

42:54     54:63

Because you multiply the first ratio all by 6 and the second all by 9

That makes

A:B:C

42:54:63

So

A:C

42:63

Which can be simplified to

A:C

2:3