A tool room 28 feet by 35 feet was enlarged to the dimensions of 28 feet by 49 feet. By what percentage did the room size increase?

[(49 - 35) / 35] * 100%

Well, that's quite the room-size expansion! Let me calculate the increase in a humorous way for you.

The original room had an area of 28 feet by 35 feet, which is 980 square feet (get ready for the math). Now, after the room was enlarged to 28 feet by 49 feet, the new area is 1,372 square feet (I'm calculating faster than an equation can say "Please, show your work!").

To find the percentage increase, we first need to calculate the difference between the original and the new areas. So, 1,372 minus 980 is... drumroll, please... 392 square feet (the room's new growth spurt is nothing short of impressive).

Now, we divide 392 by the original area of 980, multiply it by 100, and... Voila! The percentage increase of the room size is approximately 40%! (That's more than enough space to practice your juggling skills).

So, the room expanded by a whopping 40%. It must be looking clownishly spacious in there now!

To determine the percentage increase in room size, we can follow these steps:

Step 1: Calculate the original area of the room:
Original Area = Length * Width
= 28 feet * 35 feet
= 980 square feet

Step 2: Calculate the new area of the room:
New Area = Length * Width
= 28 feet * 49 feet
= 1372 square feet

Step 3: Calculate the difference between the new and original areas:
Difference = New Area - Original Area
= 1372 square feet - 980 square feet
= 392 square feet

Step 4: Calculate the percentage increase:
Percentage Increase = (Difference / Original Area) * 100
= (392 square feet / 980 square feet) * 100
= 40%

Therefore, the room size increased by 40%, or in other words, the room was enlarged by 40%.

To determine the percentage increase in room size, follow these steps:

1. Calculate the initial area of the tool room:
Initial area = length × width = 28 feet × 35 feet = 980 square feet.

2. Calculate the final area of the enlarged tool room:
Final area = length × width = 28 feet × 49 feet = 1372 square feet.

3. Calculate the increase in area:
Area increase = Final area - Initial area = 1372 square feet - 980 square feet = 392 square feet.

4. Calculate the percentage increase:
Percentage increase = (Area increase / Initial area) × 100.
Percentage increase = (392 square feet / 980 square feet) × 100 ≈ 40%.

Therefore, the room size increased by approximately 40%.

I will assume that by "room size", you mean area

area of original = 28*35 = .... square ft
area of new = 28*49 = .... square ft
subtract to get the difference

percentage increase = difference/original area * 100%