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posledela
3 years ago
9

Kareem took 4 2/5 hours to clean the bathroom. Then he took 2 1/4 hours to clean the den. How much total time did Kareem take to

clean the two rooms?
Write your answer as a mixed number in simplest form.
Mathematics
1 answer:
nika2105 [10]3 years ago
6 0

Answer:

  6 13/20 hours

Step-by-step explanation:

Addition of fractions requires they be expressed using a common denominator. Here, that will be 5·4 = 20, and the two fractions can be written as ...

  2/5 = 8/20

  1/4 = 5/20

Then the sum of the mixed numbers is ...

  (4 2/5) +(2 1/4) = (4 +2) +(2/5 +1/4) = 6 +(8/20 +5/20)

  = 6 13/20

It took Kareem 6 13/20 hours to clean the two rooms.

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