Bunuel wrote
Quote:
The toll T, in dollars, for a truck using a certain bridge is given by the formula T = 1.50 + 0.50( 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 its front axle and 4 wheels on each of its other axles?
(A) $ 2.50
(B) $ 3.00
(C) $ 3.50
(D) $ 4.00
(E) $ 5.00
Saumya2403 wrote:
Hi all,
Kindly explain solution to this question once more as I couldn't understand how there are 5 axels
Saumya2403 -
On the front axle (rod/pole), there is only one wheel on each side, and hence a total of
two wheels on that axle.
On the other four axles, there are two wheels on each side, for a total of
four wheels each those four axles.
If the setup is sketched such that "
0" is a wheel and "
--" is an axle:
front axle:
• one wheel on each axle SIDE
• two wheels total on the axle
rod (pole)
other axles:
• two wheels on each axle SIDE
• four wheels total on the axle
rod (pole)
SKETCH:
0
--0
00
--00
00
--00
00
--00
00
--00
There are five axles. Hope it helps.
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that within me there lay an invincible summer.
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80% (00:59) correct 
