Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?

1.5 hours

Step-by-step explanation:

Set up the proportion.

Put necklaces on one side

12 necklaces

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9 necklaces

Put hours on the other

2 hours

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x

The 9 goes on top because it is connected with the 12 necklaces. Put together, the 2 ratios are

Cross multiply

12x = 9*2                         Combine the right

12x = 18                           Divide by 12

12x/12 = 18/12                  Do the division

x = 1.5 hours        

i would have to say it is c.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed