Find \(45\% \) of \(90\) Kg

What is 20% of 120 seconds

What is 42% of $300?

What is 105% of 800 Kg?

A discount is a saving made between the original price of an item and the cheaper price.

a) How much do you save if you get a \({\rm{25\% }}\)  discount on a \({\rm{\$ 480}}\) games system?
b) What would be the discount price of the games system?

Find \({\rm{18\% }}\) of \({\rm{\$ 550}}\) 

\({\rm{14\% }}\) of the \({\rm{ 550}}\) swimmers at the swimming carnival wore green caps. How many swimmers wore green caps?

If \({\rm{80\% }}\) of the seats at a concert must be sold to make a profit, how many must be sold in a \({\rm{2000 - seat}}\) theatre to make a profit?

Calculate \(12\dfrac{1}{2}\% \;\) of \(4\;\)hours (in minutes)