If 140 is reduced to 112, what per cent is a reduction?

A shopkeeper buys some packets of biscuits for rupees 80. Had he bought four more packets for the same amount each packet would have cost rupees 1 less. How many packets did he buy?

A dinner set was bought for Rs. 2464 after getting a discount of 12% on its MP. Find the MP of dinner set?

Out of a class of 45 students, five were absent 30% of the remaining had failed to do homework. Find the number of students who did the homework.

Manas purchase a dress for rupees 5400 including 12% GST find the price of the dress before GST was added?