the city has 78 buses. 33% of them are new and cause less pollution. If the city replaces 15 old buses with new ones, what perce
nt of the buses will be new?
1 answer:
78×.33=25.74 busses are new
25.74+15=40.74 new busses
78+15=93 total busses
40.74/78=0.5223076923= 52% will be new with the new 15 busses
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