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andrew11 [14]
3 years ago
13

A crew of highway workers paved 1/5 mile in 1/8 hour. If they work at the same rate, how much will they

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer:

The easiest approach is to realise that one hour is 3 times longer than 20 minutes. The longer the time, the more they will pave.

215 of a mile, in 20 minutes, how much in 60 minutes?#

They will pave 3 times more.

215×31=615 of a mile

615=25 of a mile

You could also use the 'unitary method' where you find out how much they pave in ONE minute (divide by 20) and them multiply by 60 to find how much in one hour.

Look at what happens:

215÷20×60

=215×120×603

=215×3 ← exactly the same maths.

=25

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