What is the ratio of 18 months to 2 years? In my book it is 3:4 because they change 2 years to 24 months... another question.. What is the ratio of 8 weeks to 90 days???

1 Answer
Feb 13, 2018

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Yes, you need to make sure both quantities have the same unit before calculating the ratio. That is how your book calculated the ratio of 18 months to 2 years.

For the second problem, we will convert the 8 weeks to days:

#8 weeks = 8*7=56 days#

The ratio is:

#56/90=28/45#