Percentages

Percentage change and applications.

General Test7 questions

Key ideas

x% of y = y% of x.
An increase of a% followed by a decrease of a% gives a net decrease of a²/100 %.
Successive changes of a% and b%: net change = a + b + ab/100 %.

What is 25% of 480?	Easy
The price of a book rises from ₹200 to ₹250. What is the percentage increase?	Easy
What is 15% of 240?	Easy
A price rises by 10% and then falls by 10%. The net change is:	Medium
If 30% of a number is 90, the number is:	Easy