Question

A jar of natural peanut butter normally costs $4.00.Today it's on sale for 3.60. What is the percentage of this discount?

a. 10%
b. 111%
c. 90%
d. 4%

Answer 1

it's a. 10%

4*0.1=0.4
4-0.4=3.60

Answer 2

Find out the what is the percentage of this discount .

To prove

Formula

Discount = Marked price - selling price

As given

a jar of natural peanut butter normally costs $4.00 .

it's on sale for $3.60 .

thus

Marked price = $4.00

selling price = $3.60

put in the above formula

Discount = 4.00 - 3.60

= 0.4

Formula

`Discount\ percentage = (Discount* 100)/(Marked\ price)`

put the value

`Discount\ percentage = (0.4* 100)/(4.00)`

Discount percentage = 10%

Option (a) is correct .

Hence proved