Question

Question #83af9

Answer 1

B.) and D.)

Explanation:

Let
`c`: base price(price without tax)
`c'`: tax-included price
and `p`: tax rate(%).

Calculate tax-included price as follows:
`c'=c(1+p/100)`

In this question, `c'=86.40` (dollars) and `p=8`.
Therefore, `86.40=c(1+8/100)=1.08c` is the right equation.

Note that A.) is wrong, since `0.92*86.40=79.488` is diffrent from `86.40/1.08=80.00`.