Question

23. In the new budget, the price of petrol rose by 10%. By how much percent
Dohan's income is Rs 15500 per month. He saves 11% of his income. If
reduce the consumption so that the expenditure does not increase?
roduces his saving by 1%, how much does
22 Ankit was given
was his salary before increment?​

Answer 1

Step-by-step explanation:

Let price of petrol be Rs.100.

After increasing,

Price of petrol =100+ 10/100×100=Rs.110

Now, to keep same expenditure, the consumption should be reduced by x%(say).

Now,

x= 110−100/110 ×100

⇒x= 10/110×100≈9%

Hence, to keep same expenditure, the consumption should be reduced by 9%.