True or false: percent rules (SSC CGL)

Exercise and reference answers

Questions

1. Statement is true

   No

   Statement

   A 10% rise followed by a 10% fall returns to the original value.

2. Statement is true

   No

   Statement

   Successive discounts of 10% then 20% equal a single 30% discount.

3. Statement is true

   Yes

   Statement

   If A is 25% more than B, then B is 20% less than A.

4. Statement is true

   Yes

   Statement

   Doubling a quantity is the same as a 100% increase.