A Photographer and Math

A photographer studio charges a sitting fee of $50 and $10 per enlargement ordered. Right an equation to represent the number of enlargements ordered, n, by a customer if the total cost was $180. Then find the number the number of enlargements ordered.


Solution:

If n is the number of enlargements ordered, then the total cost is equal to the sitting fee plus cost of enlargements.

Cost of enlargements = number of enlargements ordered times cost per 1 enlargement.

Cost of enlargements = n ×10

Total cost = 50 + 10n

180 = 50 + 10n

180 - 50 = 50 - 50 + 10n

130 = 10n

130/10 = 10n/10

13 = n

The customer ordered 13 enlargements.


Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Basic math word problem.

Recent Articles

  1. Factoring trinomials of the form x^2 + bx + c

    Jul 03, 20 09:51 AM

    factoring trinomials (ax^2 + bx + c ) when a is equal to 1 is the goal of this lesson.

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

                                 Follow me on Pinterest

Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.