Question

9 days ago the area covered by a mold and a piece of bread with three square inches today the mold covers 9 square inches find the change of rate?

Answer 1

Answer

200% increase

Explanation

It is given that,

9 days ago the area covered by a mold and a piece of bread with three square inches

Today the mold covers 9 square inches

Here we consider increase in percentage

Increasing percentage =  $\frac{Difference}{Initial value}$x100

Difference = Final value - initial value

Final value -9 square inches

Initial value - 3 square inches

Difference = 9-3 = 6

Increasing percentage=$\frac{6}{3}$x100

Therefore   change of rate =  200%

Answer 2

9 days ago, mold = 3 in²

Now, mold = 9 in²

Find the change:

Change = 9 - 3 = 6 in²

Find the rate of change:

Rate of change = change/original x 100

Rate of change = 6/3 x 100 = 200%

Answer: The rate of change is 200%