Question

Video express sells used tapes. Martha bought v tapes for $45. Write an algebraic expression for the average cost of each tape.

Answer 1

The average cost of each tape is
`(45)/(v)`

Explanation:

Total number of tapes bought = v tapes

Total cost paid for v tapes = $45

By UNITARY METHOD:

If the cost of n objects is A.

Then the unit price is
`\frac{\textrm{Total cost of n  objects}}{\textrm{Number of the objects}}`

Cost of v tapes = $45

⇒ Cost of 1 tape =
`\frac{\textrm{Total cost of v tapes}}{\textrm{v}}`

=
`(45)/(v)`

Hence, the average cost of each tape is
`(45)/(v)`