SOLUTION: Willy Wanka's factory Has a machine that can make 1000 chocolates bars in5 hours. A new machine was brought and it could make the same amount of chocolates in only 3 hours. During

Question 1092045: Willy Wanka's factory Has a machine that can make 1000 chocolates bars in5 hours. A new machine was brought and it could make the same amount of chocolates in only 3 hours. During the holiday rush, both machines were used together to make an order of 20,000 chocolates How long would both machines have to make them?
Answer by ikleyn(52872) (Show Source): You can put this solution on YOUR website!
.

The rate of the old machine is  chocs per hour.

The rate of the new machine is  chocs per hour.


Their combined rate is  =  =  chocs per hour.


It will take  =  = 37.5 hours to make 20000 chocs working together.

Answer. 37.5 hours.

Solved.

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It is a typical joint work problem.

There is a wide variety of similar solved joint-work problems with detailed explanations in this site. See the lessons
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Also, you have this free of charge online textbook in ALGEBRA-I in this site
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The referred lessons are the part of this textbook under the topic
"Rate of work and joint work problems" of the section "Word problems".

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Free of charge online textbook in ALGEBRA-I
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