Tilly earns p dollars for every w hours of work. Which expression represents the amount of money, in dollars, Tilly earns for 39w hours of work?
Correct answer: A. 39p
- A. 39p
- B. p/39
- C. p + 39
- D. p - 39
Explanation
Choice A is correct. It's given that Tilly earns p dollars for every w hours of work. This can be represented by the proportion p w . The amount of money, x , Tilly earns for 39w hours of work can be found by setting up the proportion p/w = x/39w. This can be rewritten as 39pw = xw . Dividing both sides by w results in x p =39 .
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