Question

the cost of petrol in increased by 12% find the increase amount if the cost is rupees 54 litres​

Answer 1

Answer:

Step-by-step explanation:

Now if the cost is increased to 12% it will be

= 70+(12%*70)

=84 rupees/ litre.

So the price difference is 84–70=14 rupees/ litre.

Now if the expenditure should be same so that Mr. Brown will pay only 70 rupees, then he must be consuming less petrol. ( i.e lesser than 1 litre.). So he will consume :

i.e (70 rupees / 84 rupees)*1 litre= 0.8333 litre.

Reduction in quantity of petrol consumed by Mr. Brown= 1 litre –0.83333 litre= 0.1666 litre.

Therefore percentage reduction of petrol consumption by Mr. Brown

=(1–0.8333)*100= 16.67 %

Answer 2

Answer:

cost of petrol=54 per litre

New cost=54+(54*12/100)

54+6.48

60.48