Question

The cost of a calculator is $2.50 less than five times the cost of a notebook. If Jordan purchases one calculator and one notebook, the total cost is $20. Find the cost of the calculator.

Answer 1

Note book is $20
calculator is $2.50 less than five times the cost of a notebook, then:
5 * $20 - $2.50 = $100 - $2.50 = $97.50

calculator: $97.50
notebook: $20
Total cost: $97.50 + $20 = $117.50

answer: total cost of one calculator and one notebook: $117.50