Question

With the decrease in price of coffee by 20%, a cafeteria was able to buy 4 kg more coffee with the same 800 that they spent each month on buying coffee. The original and reduced prices of coffee are respectively​

Answer 1

Step-by-step explanation:

Owing to reduction in price of rice, there is a saving of 20% on Rs.77

i.e.

100

20

×77=Rs.15.4

With Rs. 15.4, he can purchase 3.5 kg of rice

∴ Reduced price of 3.5 kg of rice =Rs.15.4

⇒ Rreduced price of 1 kg of rice

=Rs.

3.5

15.4

=Rs.4.4

∴ Original price =

80

100

×4.4=5.5

Answer 2

Step-by-step explanation:

Owing to reduction in price of rice, there is a saving of 20% on Rs.77

i.e. 10020×77=Rs.15.4

With Rs. 15.4, he can purchase 3.5 kg of rice

∴ Reduced price of 3.5 kg of rice =Rs.15.4

⇒ Rreduced price of 1 kg of rice

=Rs.3.515.4=Rs.4.4

∴ Original price =80100×4.4=5.5