Gmat_mission wrote: ↑Sun May 03, 2020 1:41 pm
One inch represents 20 miles on Map \(K\) and one inch represents 30 miles on Map \(L.\) An area of 3 square inches represents how many more square miles on Map \(L\) than on Map \(K ?\)
A. 30
B. 400
C. 500
D. 900
E. 1,500
[spoiler]OA=E[/spoiler]
Source: Official Guide
An area of 3 square inches represents how many more square miles on Map L than on Map K ?
If we want to find an area of 3 square inches, we can make things easy on ourselves by finding the area of a rectangle measuring
1 inch by 3 inches
One inch represents 20 miles on Map K
So, 1 inch = 20 miles on Map K
And 3 inches = 60 miles on Map K
Area = (20 miles)(60 miles) =
1200 square miles
One inch represents 30 miles on Map L
So, 1 inch = 30 miles on Map L
And 3 inches = 90 miles on Map L
Area = (30 miles)(90 miles) =
2700 square miles
DIFFERENCE in areas =
2700 -
1200 =
1500
Answer: E
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
