Q. Source: GMAT Official (2016)
Q. The toll T , in dollars fir a truck using a certain bridges is given by the formulate T=1.50+.50(x-2), where x is the number of axles on the truck. What is the toll for an 18 wheel truck that has 2 wheels on the front axle & 4 wheels on each of its other axles ?
A. $ 2.50;
B.$ 3.00
C.$3.50;
D.$4.00
E.$ 5.00
Official Guide problem
This topic has expert replies
GMAT/MBA Expert
- [email protected]
- Elite Legendary Member
- Posts: 10392
- Joined: Sun Jun 23, 2013 6:38 pm
- Location: Palo Alto, CA
- Thanked: 2867 times
- Followed by:511 members
- GMAT Score:800
Hi Joy Shaha,
This prompt gives us a formula that is based on the number of truck AXLES. Once we know the number of axles, we can figure out the total price of the toll.
We're told that that a truck has 18 wheels --> 2 wheels on the front axle and 4 wheels on each of the other axles. With that information, we know that there are 5 total axles:
1st axle = 2 wheels
2nd axle = 4 wheels
3rd axle = 4 wheels
4th axle = 4 wheels
5th axle = 4 wheels
Total = 18 wheels
Since the truck has 5 axles, we can plug in X=5 into the given equation...
T = 1.50 + (.50)(5-2) = 1.50 + (.50)(3) = $3.00
Final Answer: B
GMAT assassins aren't born, they're made,
Rich
This prompt gives us a formula that is based on the number of truck AXLES. Once we know the number of axles, we can figure out the total price of the toll.
We're told that that a truck has 18 wheels --> 2 wheels on the front axle and 4 wheels on each of the other axles. With that information, we know that there are 5 total axles:
1st axle = 2 wheels
2nd axle = 4 wheels
3rd axle = 4 wheels
4th axle = 4 wheels
5th axle = 4 wheels
Total = 18 wheels
Since the truck has 5 axles, we can plug in X=5 into the given equation...
T = 1.50 + (.50)(5-2) = 1.50 + (.50)(3) = $3.00
Final Answer: B
GMAT assassins aren't born, they're made,
Rich
-
- Master | Next Rank: 500 Posts
- Posts: 199
- Joined: Sat Apr 26, 2014 10:53 am
- Thanked: 16 times
- Followed by:4 members
- GMAT Score:780
You need to compute the number of axles from the information pertaining to the number of wheels. There are 18 wheels in total, 2 on the front axle and 4 on each of the remaining axles. This means there are a total of 5 axles. Axles = 1 + 16/4 = 5. Plug this into the equation for x, and solve for T.Joy Shaha wrote:Q. Source: GMAT Official (2016)
Q. The toll T , in dollars fir a truck using a certain bridges is given by the formulate T=1.50+.50(x-2), where x is the number of axles on the truck. What is the toll for an 18 wheel truck that has 2 wheels on the front axle & 4 wheels on each of its other axles ?
A. $ 2.50;
B.$ 3.00
C.$3.50;
D.$4.00
E.$ 5.00
800 or bust!
- ygcrowanhand
- Senior | Next Rank: 100 Posts
- Posts: 30
- Joined: Mon Nov 24, 2014 1:47 pm
- Location: London
Hi GMATters,
Here's a video explanation I created for this problem: https://www.youtube.com/watch?v=wvd8qfZ_CBQ
Enjoy!
Rowan
Here's a video explanation I created for this problem: https://www.youtube.com/watch?v=wvd8qfZ_CBQ
Enjoy!
Rowan
Is Your GMAT Score Stuck in the 600s? This FREE 8-Video, 20-Page Guide Can Help.
https://privategmattutor.london/move-yo ... -the-700s/
PS have you seen the new GMAT Work and Rates guide? Comes with a free 8-video course.
https://yourgmatcoach.podia.com/courses ... s-problems
Learn more about Private GMAT Tutoring at: https://privategmattutor.london
https://privategmattutor.london/move-yo ... -the-700s/
PS have you seen the new GMAT Work and Rates guide? Comes with a free 8-video course.
https://yourgmatcoach.podia.com/courses ... s-problems
Learn more about Private GMAT Tutoring at: https://privategmattutor.london
GMAT/MBA Expert
- Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7243
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
We need to determine the toll for an 18-wheel truck that has 2 wheels on its front axle and 4 wheels on each of its other axles.Joy Shaha wrote: ↑Fri May 20, 2016 1:20 amQ. Source: GMAT Official (2016)
Q. The toll T , in dollars fir a truck using a certain bridges is given by the formulate T=1.50+.50(x-2), where x is the number of axles on the truck. What is the toll for an 18 wheel truck that has 2 wheels on the front axle & 4 wheels on each of its other axles ?
A. $ 2.50;
B.$ 3.00
C.$3.50;
D.$4.00
E.$ 5.00
Since there are 18 wheels and 2 wheels on the front axle and 4 wheels on the other, we have 1 axle for the front 2-wheels and 16/4 = 4 axles for the other wheels. Thus, the truck has a total of 5 axles and its toll is:
T = 1.5 + 0.5(5 - 2)
T = 1.5 + 1.5 = 3.00
Answer: B
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