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Sam and two friends put letters in envelopes on Monday.
The three of them take two hours to put 600 letters in envelopes.
On Tuesday Sam has three friends helping.
Working at the same rate, how many letters should the four of them be able to put in
envelopes in two hours?

Answer :

Answer: 800 envelopes

Step-by-step explanation:

Sam and her friends are working at a rate of 100 letters in envelopes per hour per person. So, if there are 4 people helping including sam, you just have to multiply 400 by 2 hours, which will give you 800.

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