Source: Princeton Review
Copper pipe costs x cents per foot in 8-foot lengths, and x+ y cents per foot in shorter lengths. What is the lowest possible price, in cents, of 51 feet of pipe in terms of x and y?
A. 51(x+y)
B. 51x
C. 48x+3y
D. 48(x+y)
E. 51x+3y
The OA is E
Copper pipe costs x cents per foot in 8-foot lengths, and x+y cents per foot in shorter lengths...
This topic has expert replies
-
- Moderator
- Posts: 2209
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
GMAT/MBA Expert
- Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7247
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
Solution:BTGmoderatorLU wrote: ↑Sat Aug 08, 2020 5:43 amSource: Princeton Review
Copper pipe costs x cents per foot in 8-foot lengths, and x+ y cents per foot in shorter lengths. What is the lowest possible price, in cents, of 51 feet of pipe in terms of x and y?
A. 51(x+y)
B. 51x
C. 48x+3y
D. 48(x+y)
E. 51x+3y
The OA is E
For 51 feet of pipe, the cheapest option is to buy six 8-foot pipes and one 3-foot pipe. Therefore, the lowest possible price, in cents, of 51 feet of pipe, is:
6 * 8 * x + 1 * 3 * (x + y) = 48x + 3x + 3y = 51x + 3y
Answer: E
Scott Woodbury-Stewart
Founder and CEO
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews
Total required length \(= 51\)BTGmoderatorLU wrote: ↑Sat Aug 08, 2020 5:43 amSource: Princeton Review
Copper pipe costs x cents per foot in 8-foot lengths, and x+ y cents per foot in shorter lengths. What is the lowest possible price, in cents, of 51 feet of pipe in terms of x and y?
A. 51(x+y)
B. 51x
C. 48x+3y
D. 48(x+y)
E. 51x+3y
The OA is E
So,
\(48x+3x+3y; 51x+3y\)