Question

Your station charges $16.50 for a lubrication job. As a promotion you sell six coupons for lubrication jobs for $90. What percentage discount are you offering for customers who purchase the 6-coupon lube book? Discount (to the nearest tenth) = _____.

a 9.1
b 10.0
c 18.3
d 90.1

Answer 1

10% because 16.50 * 6 = 99 so without the coupon, its £99 with its £90 the extra £9 is 10% off 99 so they are getting a 10% discount

Answer 2

A. 9.1

Explanation:

Given,

The station charges $16.50 for a lubrication job coupon.

⇒ The price of 1 coupon before discount = $ 16.50,

⇒ The price of 6 coupons before discount = 6 × 16.50 = $ 99,

While, As a promotion 6 coupons are sold for $90.

⇒ The price of 6 coupons after discount = $ 90

Thus, the discount in 6 coupons = Price before discount - Price after discount

= 99 - 90

= $ 9

Hence,

`\text{Discount percent}=\frac{\text{Discount}}{\text{ Price before discount}}* 100`

`=(9)/(99)* 100`

`=(900)/(99)=9.0909\% \approx 9.1\%`