Cherry put up a delivery service. She charges $2.50 for a 3-5 kilograms cargo and $4 for a 6-8 kilograms cargo. If she delivers four 5 kilograms cargo and two 8 kilograms cargo per day, how much money will she earn in a week?
Let's think step by step.
126
Cherry earns $2.

50 x 4 = $10 after delivering four 5 kilograms of cargo per day.

She earns $4 x 2 = $8 after delivering two 8 kilograms of cargo per day.

So, her total earning per day is $8 + $10 = $18.

Therefore, she will earn $18 x 7 = $126 in a week.

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The answer: 126