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zepelin [54]
3 years ago
7

claire mowed 5 lawns last week. show mowed each lawn in 7/12 hour. she mowed the same lawns this week in 5/12 hour each using he

r new lawn mower. How many times longer was Claire's time to now all the lawns last week than this week?
Mathematics
1 answer:
Zinaida [17]3 years ago
5 0

Answer:

\dfrac{5}{6} hour or 50 minutes

Step-by-step explanation:

<u>Last week:</u>

Claire mowed 5 lawns

She mowed each lawn in \frac{7}{12} hour.

She spent

5\cdot \dfrac{7}{12}=\dfrac{35}{12}=2\dfrac{11}{12}

hours to mow 5 lawns.

<u>This week:</u>

Claire mowed 5 lawns

She mowed each lawn in \frac{5}{12} hour.

She spent

5\cdot \dfrac{5}{12}=\dfrac{25}{12}=2\dfrac{1}{12}

hours to mow 5 lawns.

<u>Difference:</u>

2\dfrac{11}{12}-2\dfrac{1}{12}=\dfrac{11}{12}-\dfrac{1}{12}=\dfrac{10}{12}=\dfrac{5}{6}

hour or 50 minutes.

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