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Multiplying Fractions

A leaky pool loses 2 1/4 inches of water each day. Jermaine and Mildred are asked to determine the change in the amount of water in the pool over 5 days.

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Paul M. | Learn "how to" do the math and why the "how to" works!Learn "how to" do the math and why the "...
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Fist of all, change the mixed number into either a decimal or an improper fraction.
 
9/4 inches/day * 5 days = 45/4 inches = 11 1/4 inches in 5 days.
 
Please note that in this kind of a problem, it is always helpful to make the units work, i.e. 
 
inches/day * days = inches.
Michael V. | I strive to help learners gain a love for lifelong learning.I strive to help learners gain a love fo...
4.8 4.8 (38 lesson ratings) (38)
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Convert 2 1/4 into an improper fraction and multiply by 5.

9/4 x 5/1 = 45/4 = 11 1/4