In a race, average speed of total 75 bikes is 35km/hr. The average speed of red bikes is 55 km/hr. If average speed of green bikes is 30km/hr, then how many green bikes are there? - Study24x7
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27 followers study24x7 01 Jul 2021 02:53 PM study24x7 study24x7

In a race, average speed of total 75 bikes is 35km/hr. The average speed of red bikes is 55 km/hr. If average speed of green bikes is 30km/hr, then how many green bikes are there?

A

70

B

60

C

45

D

50

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