the price of petrol increased by 25%. By what percentage must a customer reduce the consumption so that the earlier bill on the petrol does not alter?
Answers
Answer:
By 20%.
Step-by-step explanation:
Just take an example of the petrol cost and volume.
Now apply the situation for the cost and volume.
You will get the answer.
Answer: -6.25%
Step-by-step explanation: Assuming Cost of Petrol = ₹100
Inreased Petrol Price is 25%
So, the increased price must be ₹100 + (25/100)% = ₹125 ie. now cost for 100% consumption.
Reduced Consumption is 25%
So, the reduced price must be 100% - 25% = 75% from increased cost.
And now to find the percentage of the rise or fall of price incurred to the person by reducing his consumption by 25%
This can be calculated by,
Assuming 100% as 125 units (rupee) and 75% as x
Cross Multiplying we get,
(125*75)/100 = ₹93.75
Therefore the change in price is -6.25% from his old price after reducing consumption.
(ie) He paid ₹100 for petrol, and by reducing his consumption he only pays ₹93.75.
Rise or Fall percentage = -6.25%
HOPE IT WILL HELP YOU :-)