Question

Mike can sell 20 glasses of lemonade for 10¢ each. If heraises the price to 20¢, he estimates that he'll only be able tosell 15 glasses. How much more money can he earn if hecharges 20¢ per glass instead of 10¢?

Answer 1

Okay, here we have this:

First let's calculate how much is he earning selling 20 glasses each glass for 10¢:

Actual Earnings=20*10¢=200¢

Now, let's calculate how much will he earn if raises the price to 20¢ and sell the 15 glasses that he is estimating:

Future Earning=15*20¢=300¢

Let's calculate the diference now:

Diference=300¢-200¢=100¢

According with this he will earn 100¢ more if he charges 20¢ per glass instead of 10¢.