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Mathematics 15 Online
OpenStudy (anonymous):

Of 80 students surveyed, 35 percent said they preferred listening to music while they did homework. How many students wanted to hear music while doing homework?

OpenStudy (anonymous):

28

OpenStudy (anonymous):

What percent of 12 is 9?

OpenStudy (anonymous):

(9/12)*100 = 75%

OpenStudy (anonymous):

The Tigers lost 15% of the 60 games that they played this season. How many games did they win?

OpenStudy (anonymous):

15% lost = 85% won 0.85 x 60 = 51 games won

OpenStudy (anonymous):

What percent of 28 is 14?

OpenStudy (anonymous):

50%

OpenStudy (anonymous):

Find the sale price of a $60 shirt at 30% off.

OpenStudy (anonymous):

Two ways to think about it. Multiply $60 times .30 then subtract that from $60 60x.30=18 60-18=42 $42.00 is the cost of the shirt on sale. 70% is the complement of 30% found by subtracting 100%-30%.

OpenStudy (anonymous):

Tawnya paid $20 for a skirt that was marked down 50%. What was the original price of the skirt?

OpenStudy (anonymous):

The skirt was originally 40 dollars!

OpenStudy (anonymous):

60 to 75

OpenStudy (anonymous):

the %?

OpenStudy (anonymous):

yea %

OpenStudy (anonymous):

80%

OpenStudy (anonymous):

Find the sale price of a $130 pair of shoes at a 15% discount.

OpenStudy (anonymous):

Either multiply $130.00 by .15 then subtract from $130 or multiply by .85,85% which is the complement of 15%. Both ways you should get $110.50

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