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3 years ago

Johnny mows 6 yards in 1 hour, and he has 21 yards to mow. How long will it take him?

2 answers:

7 0

This is a proportion equation. 6 yards in 1 hour is 21 yards to x hours.

x=hours it takes to mow 21 yards

1) Set up your proportion: 6 yards / 1 hour = 21 yards / x hours
2) Now you cross multiply. (6*x)=(1*21)
3) 6x=21
4) Divide both sides by 6
5) x=3.5

So Johnny can mow 21 yards in 3.5 hours.

Hope this helps! :)

choli [55]3 years ago

4 0

3hrs and 30mins long

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