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  • Brainly User
2015-11-02T11:30:21+08:00

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To find the ratio, the two quantities must have the same unit of measure.

First, convert 1 and 1/4 years to months.
1 and 1/4 years = 1.25 years (12 months/year) = 15 months

The ratio of 9 months to 15 months:

9 : 15 months

Simplify to lowest term by dividing both quantities to their Greatest Common Factor (GCF).  The GCF of 9 and 15 is 3.

9 ÷ 3 = 3                            15 ÷ 3 = 5

The ratio is 3 : 5 months

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2015-11-03T16:13:59+08:00
9 months to 1 1/4 year is 9:15 but it can be reduced to lowest term and it is 3:5

hope it helps...
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