Answer:
17 hours
Explanation:
Tom made $171 for 9 hours of work. At the same rate, how many hours would he have to work to make 323 ?
- we can solve with an equation
171 : 9 = 323 : x
x = 9 * 323 : 171
x = 2907 : 171
x = 17
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check
171 : 9 = 323 : 17
19 = 19