SOLUTION: Any knows about this ?
After a rise in price of petrol, the driven mileage dropped by 6.7% , however the fuel costs increased by 4.5%. By what percentage did the petrol price rise
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Question 388857: Any knows about this ?
After a rise in price of petrol, the driven mileage dropped by 6.7% , however the fuel costs increased by 4.5%. By what percentage did the petrol price rise ??
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
To compare price/gallon of petrol, You need too do so for
an equal number of miles driven, before and after the price
increase.
Before, the % ratio of costs to miles driven is
I can call it
Afterwards, the cost to miles driven is
The % price rise is
The price rose 4.5%
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