Percentage
Important Concept and Tricks
1. If x% of A is equal to y% of B, then z% of A=(yz/x)% of B
2. When a number x is increased or decreased by y%, then the new number will be (100+y)*x/100
3. When the value of an object is first changed (increased ) by a% and then changed (increased ) by b%,then Net effect=[a+b +ab/100]%
Important Concept and Tricks
1. If x% of A is equal to y% of B, then z% of A=(yz/x)% of B
2. When a number x is increased or decreased by y%, then the new number will be (100+y)*x/100
3. When the value of an object is first changed (increased ) by a% and then changed (increased ) by b%,then Net effect=[a+b +ab/100]%
