Lori works at a
restaurant. In
addition to an $700 tips, Lori
earned $4 per hour working last
week. Lori's total earning last
week were $860. How many total
hours did she work last week?

Lori's pay is the total of her hourly pay and her tips. Her hourly pay is found by multiplying hours worked by her hourly rate.

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Here's the relation written as an equation.

total pay = tips + (hours worked)(hourly rate)

$860 = $700 +(hours worked)($4/hour)

$160 = (hours worked)($4/hour) . . . . . . . . . subtract $700

hours worked = ($160)/($4/hour) = 40 hours . . . . . divide by $4/hour

Lori worked 40 hours last week.

Lori works at a restaurant. In addition to an $700 tips, Lori earned $4 per hour working last week. Lori's total earning last week were $860. How many total hours did she work last week?

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Lori works at a
restaurant. In
addition to an $700 tips, Lori
earned $4 per hour working last
week. Lori's total earning last
week were $860. How many total
hours did she work last week?