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kati45 [8]
3 years ago
12

Bobbi can mow the park in 3 hours and Deshaun can do the same job in 7 hours. How long will it take them to mow the park

Mathematics
1 answer:
Bogdan [553]3 years ago
7 0

Answer:

2.1 hours (2 hours and 6 minutes)

Step-by-step explanation:

The rate of work of Bobbi is ⅓ while for Deshaun is 1/7 hence combined rate will be

⅓+1/7=(7+3)/21=10/21

The equivalent hours is the reciprocal of the above hence 1021/10=2.1 hours

0.1 of an hour is equivalent to 0.1*60=6 minutes

Therefore, the efforts combined will take 2.1 hours or 2 hours and 6 minutes

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