In translating sentences into mathematical expressions, the term "of" represents multiplication and the term "is" represents the equals sign.

 

 

 

Note: We use the variable N to represent the number we are looking for, also called the unknown.

Example: 30% of 90 is what number?

.30 x 90 = N

(note: we changed the percent to a decimal)

27=N

Example: 30% of what number is 90?

.30 x N = 90

(change the percent to a decimal)

N = 90 ÷ .30

N = 300

Example: What percent of 90 is 30?

P x 90 = 30

P = 30 ÷ 90

P = .333...

P = 33.3%

 

 

What are Zippy Joe's yearly expenses?

 

There are 52 weeks in a year.

 

Max Speedo races at the Motordrome Circuit in Radiant City Prime. There are 180 races every season. The winner of the season is declared Circuit Champion and given the secret code to the Tower of Power.

HINT: Max raced one year in his old Zoomer and another year in his new Zoomer.

 

How many more races did he win in his new Zoomer?

 

 
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