Question

A dance instructor charges each student $57 for dance lessons. Students who register early receive a $15 discount. A total of 11 students took dance lessons. If 5 of these students registered early, how much should the instructor collect from these 11 students?

Answer 1

`\$552`

Explanation:

Let

x ----> the number of students that registered early

we know that

x=5

so

`5(\$57-\$15)+(11-5)(\$57)`

The amount that the instructor collect from these 11 students is equal a 5 students registered early multiplied by $42 plus 6 students multiplied by $57

`5(\$42)+(6)(\$57)`

`\$210+\$342`

`\$552`