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Maths Exercices


Percentage increases. Tax problems.

A new iPhone costs $300. If there is a tax rate of 8%, how much do you have to spend in order to walk out the door with a new phone (including tax)?

original + tax = total
300+0.8(300) = 300+24 = 324

The price of a certain model of TV goes up by 10%. It used to cost £150. What will it cost in future?

If 875 goes up by 80 % the result will be: