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3 years ago

Marcie can swim 20 laps in an hour. How many hours will it take her to swim 100 laps

Mathematics

2 answers:

ozzi3 years ago

7 0

Answer:

5 hours

Step-by-step explanation:

It takes Marcie 1 hour to swim 20 laps so to swim 100 laps divide by 20. 100/20=5

Margarita [4]3 years ago

4 0

Answer:

5 hours

Step-by-step explanation:

We can write a ratio

20 laps 100 laps

-------------- = --------------

1 hour x hours

Using cross products

20x = 100

Divide by 20

20x/20 = 100/20

x = 5 hours

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