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Mathematics 18 Online
OpenStudy (alli6106):

the total cost of 3 equally priced mechanical pencils is $4.50. If the cost per pencil is increades by $0.50, how much will 5 of these pencils cost at the new rate?

OpenStudy (anonymous):

You can just divide 4.50 by 3 to see how much each pencil costs

OpenStudy (anonymous):

And the rest should be easy :P, see what you get

OpenStudy (anonymous):

So?

OpenStudy (alli6106):

a. $7.50 b.$8.00 c.$9.00 d.$9.50 e.$10.00

OpenStudy (anonymous):

Well, how much does each pencil cost?

OpenStudy (anonymous):

4.50/3 = ?

OpenStudy (alli6106):

$1.50

OpenStudy (anonymous):

Good, so now add $.50 on the pencil what do you get?

OpenStudy (alli6106):

$2

OpenStudy (anonymous):

Now multiply by 5

OpenStudy (anonymous):

Since you need 5 pencils

OpenStudy (alli6106):

10

OpenStudy (anonymous):

Bingo

OpenStudy (alli6106):

ok thanks

OpenStudy (anonymous):

Np

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