Tim works part-time at a retail store. His salary varies directly by the number of hours worked. Last week he earned $99.45 for 13 hours of work. This week he earned $160.65.

Question

Tim works part-time at a retail store.  His salary varies directly by the number of hours worked.  Last week he earned $99.45 for 13 hours of work.  This week he earned $160.65.

Damon · Answer

160.65 /x = 99.45/13 x = 13 * 160.65/99.45 = 21 hours worked if constant pay per hour