Question

On Monday morning, Susan bought 2.5 pounds of grapes at the supermarket.That day,Susan ate some grapes and had 1.75 pounds of grape left. What is the percent decrease of pounds of grapes on Monday?

Answer 1

30%

Explanation:

Use formula to find percent decrease

`\text{Percent Decrease}=\frac{\text{Old Value}-\text{New Value}}{\text{Old Value}}\cdot 100\%`

In your case,

Old Value = 2.5 pounds

New Value = 1.75 pounds

Hence,

`\text{Percent Decrease}=(2.5-1.75)/(2.5)\cdot 100\%\\ \\=(0.75)/(2.5)\cdot 100\%\\ \\=(75)/(250)\cdot 100\%\\ \\=(3)/(10)\cdot 100\%\\ \\=30\%`