The price of petrol goes up by 10 percent. By how much percent must a motorists reduce the consumption of petrol so that the expenditure on it remain unchanged?
Answers
Answered by
2
Step-by-step explanation:
r/(100+r) ×100
10/(100+10)×100
10/110 ×100
1/11×100
100/11
9 1/11
....666...
Answered by
3
Answer:
So, the motorists have to reduce the consumption of petrol by 9.09 %, so that the expenditure on it remains unchanged.
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