Charlie's garage has a rectangular floor space. Its length is 3 times its width. Charlie extends the width of his garage to 6 m, providing a floor area of 45 m2. what is the percentage

The percentage change is 140%

Step-by-step explanation:

Given

---- initial dimension

--- new width

--- new dimension

Required

The percentage increment

The length remains constant because only the width is extended.

The new area is:

Make L the subject

Substitute values for A and W

--- this is the length of the garden

Calculate the initial width:

Make W1 the subject

So, the initial area is:

The percentage change in area is:

Express as percentage

The zeros are x= 1/3, 5/2, 2