2/25 = ??

13/20 = ?

47/50 = ?

23/50 = ?

7/20 = ??

tan45° × sec60° = ?

cos0° × sec0° = ?

sin30° × cos60° = ?

tan60° × cot30° = ??

1 + tan²45° = ??

A value is increased by 20% and then by 10%. Find the net increase ??

A value is decreased by 20% and then by 10%. Find the net change ?

A number becomes 240 after a 20% increase. Find the original number ??

A number is decreased by 25% and then increased by 20%. Find the final value if the original number is 400 ??

A number is increased by 50% and then decreased by 50%. Find the net effect ??