Gigi earned $65 for 5 hours of gardening. She earned $90 for 9 hours of office work. Which statement correctly compares Gigi’s earning per hour for gardening and office work?

She earned $3 more per hour for office work than for gardening.
She earned $4 more per hour for office work than for gardening.
She earned $3 more per hour for gardening than for office work.
She earned $4 more per hour for gardening than for office work.

1 answer

To compare Gigi's earnings per hour for gardening and office work, we need to calculate her hourly rate for each type of work.

Gardening:

  • Total earnings = $65
  • Total hours = 5

Earnings per hour for gardening: \[ \text{Earnings per hour for gardening} = \frac{65}{5} = 13 \]

Office Work:

  • Total earnings = $90
  • Total hours = 9

Earnings per hour for office work: \[ \text{Earnings per hour for office work} = \frac{90}{9} = 10 \]

Now, we compare the two hourly rates:

  • Earnings per hour for gardening = $13
  • Earnings per hour for office work = $10

Next, we find the difference: \[ 13 - 10 = 3 \]

Gigi earned $3 more per hour for gardening than for office work.

Therefore, the correct statement is: She earned $3 more per hour for gardening than for office work.