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6 October, 15:45

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 percent of the buses will be new?

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  1. 6 October, 18:04
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    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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