The sale price of an item is four-fifths the original price of the item, x.

Which statement explains why both 4/5x and 0.8x can find the sale price of the item?

Multiplying by 4/5 is the same as multiplying by 80%.

Multiplying by 5/4 is the same as multiplying by 0.8.

The expressions are not equivalent.

The fraction 4/5 is the same as the decimal 0.2. Therefore, 4/5x can be written as 0.2x

Question

The sale price of an item is four-fifths the original price of the item, x.

Which statement explains why both  4/5x and 0.8x can find the sale price of the item?

Multiplying by  4/5 is the same as multiplying by 80%.

Multiplying by  5/4   is the same as multiplying by 0.8.

The expressions are not equivalent.

The fraction  4/5   is the same as the decimal 0.2. Therefore,  4/5x   can be written as 0.2x

Vocaloid · Answer

The two expressions are (4/5)x and 0.8x

Because these two expressions both work, it is natural to conclude that 4/5 and 0.8 are equal. You can confirm this by dividing 4 by 5.