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Nata [24]
3 years ago
14

There are 630 dishes that need to be rinsed. boris can rinse them in 105 minutes by himself. it will take his friend reuben 70 m

inutes to rinse these dishes. how long will it take them if they rinse these 630 dishes together?
Mathematics
1 answer:
jeka943 years ago
8 0

<u>Boris:</u>

105 mins = 630 dishes

1 min = 630 ÷ 105 = 6 dishes

<u>Reuben:</u>

70 mins 630 dishes

1 min = 630 ÷ 70 = 9 dishes

<u>Boris and Reuben:</u>

1 min = 6 + 9 = 15 dishes

<u>Number of numbers needed to rinse 630 dishes:</u>

630 ÷ 15 = 42 mins

Answer: They will take 42 mins if they rinse the 630 dishes together.

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