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3 years ago

9

A musical instrument company reduced the time it takes for a worker to build a guitar. Before it the reduction it took 5 hours.

Now in 7 hours they can build 3 guitars. By how much did the reduce the time it takes to build each guitar? Show equation and Solution.

1 answer:

pochemuha3 years ago

3 0

X=5-7/3=5*3/3 -7/3= 15/3-7/3=8/3 hour
by 8/3 h = 2 2/3 h
or
h = 2 2/3 h =2h 40 min

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