Question

Can someone answer this correctly because i am doing hegarty maths and i cant get this question wrong please someone help :)

Answer 1

The answer is 36$

Explanation:

Basically, the original price is 45 dollars, but with the extra 20% off (This is just the 1/5 off) it will be 36. This is because 45/5 equals 9 and 45-9 is 36.

Answer 2

£
`36`

Explanation:

In this situation, the price of an item is (£
`45`). It is given that there is a (
`(1)/(5)`) off discount on this item. To find the price of this item, one will have to subtract the discount rate from (1), this will yield the fraction of the object price that one has to pay. To find the actual amount one has to pay, one must multiply the fractional price of the object by the original price of the object. Using this line of thought, one can form the following equation:

`(1-(rate\ of\ discount))(original\ price)=sale\ price`

Substitute the given values into this equation:

`(1-(1)/(5))(45)=sale\ price`

Simplify: remember, a fraction with any number over itself equals (1). Bear in mind that one can only perform operations such as addition and subtraction between fractions with common denominators, that is the number under the fraction bar.

`(1-(1)/(5))(45)=sale\ price`

`((5)/(5)-(1)/(5))(45)=sale\ price`

`((5-1)/(5))(45)=sale\ price`

`((4)/(5))(45)=sale\ price`

Now perform the multiplication. Divide the denominator by the number one is multiplying by, then multiply it by the numerator (number over the fraction bar).

`((4)/(5))(45)=sale\ price`

`(4)(45 / 5)=sale\ price`

`(4)(9)=sale\ price`

`36=sale\ price`