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You usually buy a 16.5-ounce bottle of shampoo. There is a new bottle that says it gives you 30% more free. Use the drop-down menus to build an equation that could be used to find the size of the larger bottle, x.

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Answer:

  .30    = (new- 16.5) /16.5    

Step-by-step explanation:

percent increase = (new - original)/original

                   .30    = (new- 16.5) /16.5    

Answer:

x = 16.5+0.3(16.5) or x = 16.5(1.3)

Step-by-step explanation:

30% = 30/100 = 0.3.  To find an extra 30%, we would multiply this by the amount of shampoo, 16.5 ounces:

0.3(16.5)

We would then add this to the original amount, 16.5:

16.5+0.3(16.5)

We can also view this as one percentage.  We would have 100% of the original amount, 16.5 ounces, and an extra 30%; 100+30 = 130%; 130% = 130/100 = 1.3.

We would then multiply this by the original amount, 16.5:

16.5(1.3)

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