# word problemsdasdasdasdasdasdasdasdasda

label Algebra
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schedule 1 Day
account_balance_wallet \$5

A student scores 72 out of 100 on a test. If the maximum score on the next  test is also 100 points , what score does the student need to maintain at least an average of 78?

Jun 13th, 2015

His first score = 72

If his average >= 78, then his total score in two tests must be > = 2*78 =156

Since his first score is 72, he must score at least 156-72 = 84

His score in the next test >= 84

Please let me know if you need any clarification. I'm always happy to answer your questions.If you need any more clarification, I will provide.
Jun 13th, 2015

I have one one question. Parking in a studenting lot costs \$3 for the first hour half and \$1.50 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time a student can park for in this lot for \$9?

Jun 13th, 2015

First hour  cost = \$3.

For every hour or part thereof , parking cost = \$1.5

If x is the additional number of hours , total cost= 3+1.5x<=9

1.5x<=6

x<=4

Longest time = 1+4 = 5 hours. It should not exceed 5 hours.

Jun 13th, 2015

I hope that you are satisfied with this answer.

Jun 13th, 2015

Sorry I meant to put first half hour not hour half for \$3

Jun 13th, 2015

So wouldn't the answer be 4.5 ?

Jun 13th, 2015

First half hour cost = \$3

I assume \$ 1.5 remain the same.

Let x be the additional hours.

3+1.5x <=9

1.5x<=6

x<=4

Longest time = 4.5 hours or 4 1/2 hours.

Jun 13th, 2015

yes. that is what i wrote. But your intervening prompt prevented me from sending

Jun 13th, 2015

I hope you are satisfied with my answer.

Jun 13th, 2015

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Jun 13th, 2015
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Jun 13th, 2015
Nov 23rd, 2017
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