Question

Eva six Utah lessons lessons cost $90 each month she has four lessons per month how much money does Ava guitar lessons cost cost

Answer 1

Ava takes 4 guitar lessons per month.

The monthly cost is $90.

The 4 lessons have a total cost of $90. If you want to know how much if for just 1 lesson, what you have to do is divide the total cost that is $90, by the number of lessons that are 4 each month, thus:

`\begin{gathered} \text{Cost per lesson=}(90)/(4) \\ \text{Divide both the numerator and denominator by 2 to simplify:} \\ (90/2)/(4/2)=(45)/(2) \end{gathered}`

And you can simplify it again, 45/2 means the half of 45, since it is not an integer number, you can rewrite 45 as 40+5, then:

`\begin{gathered} (40+5)/(2)\text{ applying the properties of fractions:} \\ (40)/(2)+(5)/(2) \end{gathered}`

Now, 40/2 is equal to 20, and 5/2 is equal to 2.5 (this is the half of 5), thus:

`(40)/(2)+(5)/(2)=20+2.5=22.5`

The answer is option D. $22.50