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Kim and Cyndi are starting a business tutoring students in math. They rent an office for $400 per month and charge $40 per hour per student. If they have 15 students each for one hour per week how much profit do they make together in a month? (assume 4 weeks per month) can i ask the solution of that problem?

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$4400.

Posted on Mar 25, 2011

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Guys i have a few questions on math home work im really confused on what to do


Hi ,
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Dec 13, 2015 | Computers & Internet

3 Answers

Of 400 students,180 are girls.what percent are girls


Hi Charles:
"percent" means "per hundred" (times 100).
180 girls
400 students
girls of total..........
180 divided by 400
percent (times 100)
On your calculator...........
clear
180
divided by
400 display 0.45
X
100
= answer displayed 45
So, 45% are girls
To check your answer, you can
clear
400
X
45%
Display will show 180
Ta Da!

Nov 14, 2015 | Office Equipment & Supplies

1 Answer

Cost of running window a/c unit


the total power used is 750 watts so multiply that by the number of hours in use say 60 hours a week
so 60 X 750 = 42000 or 4.2 kw hours X 4 cents per kw/h =418 cents or $4.18 per week X 4 weeks =$16.72
if you are a college student talk with a maths teacher and see if what I an calculating is correct but there is no way that the ac unit will cost $150.00 a month to run
you have to be careful here as to charge you for an ac unit , it has to be on a separate meter and I suspect that he is trying to get you to subsidise his electricity account outside of the rent costs which include power for the stove and hot water
as an example we run a 2.7kw ac for 12 hours or longer and the total household bill at 21 cents / kw hour ( we live in a country where the power is a major component of the household budget) is around $360.00 per month so I think that by comparison he is trying to rip you off
seek legal advice on the subject and if the rent payment includes electricity usage then he will need a separate meter to charge for the ac unit

Jun 16, 2017 | Haier Heating & Cooling

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