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mamaluj [8]
3 years ago
12

It took Emma 3/4 hour to rake the leaves. It took her 1/5 hour more to

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
6 0

9514 1404 393

Answer:

  total: 2.85 hours = 2 17/20 hours

Step-by-step explanation:

<u>Strategy</u>: convert all fractions to decimals, determine weeding and mowing times, and add the three times to find the total.

  3/4 = 0.75

  1/5 = 0.2

<u>Solution</u>:

raking time: 0.75 hours

weeding time: 0.75 +0.2 = 0.95 hours

mowing time: 0.95 +0.2 = 1.15 hours

__

Total time: 0.75 +0.95 +1.15 = 2.85 hours = 2 17/20 hours

_____

<em>Additional comment</em>

You may recognize that 0.95 is the middle of three equally-spaced values. Then the total will be 3×0.95 = 2.85 hours.

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