Question

the price of rice has been increased by 40% by how much percentage must this New price be decreased to retain its former price​

Answer 1

Answer:

28.5 %

Step-by-step explanation:

Let the price of rice be P

Increase in price=40/100 x P

=2P/5

Now, new price=2p/5 + P

=7P/5

New price be decreased to retain its former price

Now, we have to subtract 2P/5 from 7P/5 to get P, the original price

What percentage of 7P/5 is 2P/5

=(2P/5 $\div$ 7p/5) x 100

=200/7 %

=28.5 %