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A group of students charges $8 to clean the exterior and $6 to clean theinterior of a car. They clean 9 exteriors and 5 interiors. Write and simplifythe expression to find out how much money the students raised in all.

User Apprentice
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1 Answer

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Given:

Cost of cleaning the exterior = $8

Cost of cleaning the interior = $6

Number of exteriors they clean = 9

Number of interiors they clean = 5

Let's write and simplify an expression to find out how much money the students raised in all.

To write the expression, we have:

(Cost of cleaning the exterior x number of exteriors cleaned) + (cost of cleaning the interior x number of interiors cleaned)

Hence, we have:

(8 x 9) + (6 x 5)

Let's simplify the expression.

(8 x 9) + (6 x 5) = 72 + 30 = $102

The students raised $102 in all.

ANSWER:

Expression: (8 x 9) + (6 x 5)

Amount raised: $102

User Daniel Beltrami
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