SOLUTION: Please help me break down and explain the answer to this? Thank you so much. Total profits of the sales were $4980; there were 15 more graphing calculators sold than the scientifi

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Please help me break down and explain the answer to this? Thank you so much. Total profits of the sales were $4980; there were 15 more graphing calculators sold than the scientifi      Log On

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Question 32111: Please help me break down and explain the answer to this? Thank you so much.
Total profits of the sales were $4980; there were 15 more graphing calculators sold than the scientific calculator. The scientific calculator’s price is $18.00 and the graphing calculator is $87.00. Determine how many of each calculator did the bookstore sell.

Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number of graphing calculators sold be x+15
Let the number of scientif calculators sold be x
Equation:
18(x)+87(x+15)=4980
18x+87x=4980-1305
105x=3675
x=35
35+15=50
Hence, the number of graphing calculators sold were 50 and the number of scientif calculators sold were 35.
Paul.