A number when increased by 23% becomes 861; find the number.

A number when decreased by 16% becomes 798; find the number.

A number, whose 4% is 6, is :

1. 24

2. 0.24

3. 150

4. 75

What percent of 50 is 10 ?

1. 20%

2. 500%

3. 500

4. 20