tizandtracey tizandtracey

13-05-2018
Mathematics

contestada

Which is faster rate? 3 Laps in 5 minutes or 4 laps in 7 minutes?

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TheBreeze TheBreeze

13-05-2018

To solve this, we first have to find an individual rate:
3/5
4/7
For the first one:
1 lap in 5/3 minutes
Second one:
1 lap in 7/4 minutes
find a common LCD
5/3 and 7/4
20/12 and 21/12
4 laps in 7 minutes is faster

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