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DochEvi [55]
3 years ago
7

A cross-country travels 20 kilometers before she realizes that she has to cover at least 75 kilometers in order to qualify for t

he next race. If the racer travels at a rate of 10 kilometers per hour, how many whole hours will it take her to reach the 75-kilometer mark?
Mathematics
2 answers:
pantera1 [17]3 years ago
8 0
So find how much the racer needs to cover more she covered 20 and needs to cover 75 75-20=55 she needs to cover 55 more so 10 km per hour 10 times x hours=55 miles divide both sides by 10 x hours=5.5 since you want whole hours, we round up so she at least gets there 6 hour, I think
valina [46]3 years ago
5 0
It will be 7 hour and 30 min
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