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Janine worked 15 hours last week. One job as a clerk in a sporting goods store paid her ​$7.58 per​ hour, while her job giving piano lessons paid ​$15 per hour. If she earned ​$173.06 between the two​ jobs, how many hours did she work at each​ job?

Answer :

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She worked 9 hours on store and gave piano lessons for 6 hours


Let x be the no. of hours she worked on store
Cost of 1 hour on shop = $8.47
Cost of x hours on shop = $8.47x
Let y be the no. of hours she gave piano lessons
Cost of 1 hour for piano lessons = $17
Cost of y hours on shop = $17y

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