SOLUTION: 3) the dimensions of a rectangle are enlarged by 50 percent each,what percent of the original area is the new area? 4)find the smallest number wh

Question 1096455: 3) the dimensions of a rectangle are enlarged by 50 percent each,what percent of the original area is the new area? 4)find the smallest number which then increased by 5 is divisible by 12,14,18,21,and 7? 5)In a spelling test gabby missed 8 word. he obtained a score of 68%. how many words were on the test?
Found 2 solutions by addingup, josmiceli:
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
3) you are dealing with exponential growth, the area of a rectangle is squared.
So, a rectangle 4 wide x 6 long = 24 square (meters, inches, whatever)
If you grow by 50%: 4 + 0.5(4) = 6 and the length grows to 9, and 6 x 9 = 54. The original area is 24/54 = 44% of the new area
The new area is 54/24 = 225% of the old area

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let and = the original dimensions
and = new dimensions
-------------------------------------------
= original area
and

and

225%
---------------------------------

247 increased by 5 is smallest number
--------------------------------------
Let = number of words on the test

There were 25 words on the test
--------------------------------
check:

OK
RELATED QUESTIONS
A picture measures 5 inches by 7 inches. The picture is enlarged to a size of 15 inches... (answered by checkley71,ilana)
A designer enlarged both the length and the width of a rectangular carpet by 60 percent.... (answered by jorel555)
The area of a rectangle is 18cm�. The rectangle is enlarged by a scalefactor 2. What is... (answered by ikleyn)
if the dimensions of a square are increased 10%, by what percent is teh area... (answered by stanbon)
A rectangular turtle pen is 6 feet long by 4 feet wide. The pen is enlarged by... (answered by ankor@dixie-net.com)
The original dimensions of a rectangle were 15cm by 20cm. When both dimensions were... (answered by nerdybill)
the height of a photo is 4 inches more than its width. After enlargement the height will... (answered by ankor@dixie-net.com)
The length of a rectangle is 4 square greater than the width. If each dimension is... (answered by Fombitz)
Hi Originally the ratio of the width of a rectangle to the length is 4 to 3. The... (answered by greenestamps,josgarithmetic)