Question

The price of petrol increased by 5%. By how much percent one must reduce the consumption, so that the
expenditure does not increase?

plzz explain clearly

it's so important​

Answer 1

Step-by-step explanation:

Reduction % in consumption =(100+rr×100)%

=(12525×100)=20%

Answer 2

Answer:

answer is in mixed fraction 4 into 16 /21

Step-by-step explanation:

let intial cosumption be 10 liter and its price be 100 rupees

increased price = 100 * 5/100 = 5

100+5 = 105 rupees _ new price after increasing

with 100 rupees she can purchase =

10/105*100 = 200 /21

reduction = 10 litre - 200/21 litre

= 10 / 21 litre

per cent = 10 /21 *10 = 4 *16/21 %