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I GOT A HOMEWORK QUESTION AND I'M  USUALLY SO GOOD AT MATHS ESPECIALLY PERCENTAGES BUT THIS ONE JUST KNOCKED ME TO THE GROUND I'M NOT SURE IF I WANT THE ANSWER BUT I NEED TO KNOW THE WORKING...

An item of plant costs £25,000. It depreciates at 15% per year. Servicing and maintenance costs £2500.00 in the first year and increases by 5% per year:   Find:   The...

Coffee A cup of coffee costs £1.75 The diagram shows how much money different people get when you buy a cup of coffee. Retailers get 44p Growers get 5p Others get £1.26 Cup...

A rise of 25% in the price of sugar compels a person to buy 1.5 kg of sugar less for rupees 240. Find the increased price as well as the original price per kg of sugar.

I needed the percent of 23 over 50. Which is 46% if you divide the top by the bottom. Why don’t I get the same answer if I turn 23 into .23 and multiply it by 50.

Can percentages decrease by more than 100 percent? If the original value is .2 and the new value is .00008, what is the percentage of the decrease?

Given that 0.06 mg/cm2 of water will cause corrosion on unpainted steel.   If I have a paint that allows permeation of 10.5 mg/cm2 (far more than required for corrosion .... not...