In a race, average speed of total 75 bikes is 35km/hr. The average sp – McqOptions

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1.	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
Answer» C. 45

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