Question

The price of potatoes were rupees 20 per kg. It is now rupees 40 per kg.
A) What do you think has happened?
B) What could be the cause for it?
C) How can the prices be kept in control?

Answer 1

Answer:

When the price of potatoes is reduced by 20% there must be saving of 20% on Rs. 80 i.e. of Rs. 16.

But, instead of saving Rs. 16, I purchased 2 kg potatoes.

∴ Reduced price of potatoes =216=Rs.8 per kg.

Now, let

Original price of potatoes be Rs. x.

Reduced price               Original Price          =   R.P.      :   O.P.

       (R.P)              :              (O.P.)

          80               :                100                  =     8        :     x

∴x=80100×8=Rs.10