2024 AMC 10A Problems/Problem 2
Problem
A model used to estimate the time it will take to hike to the top of the mountain on a trail is of the form 
where 
and 
are constants, 
is the time in minutes, 
is the length of the trail in miles, and 
is the altitude gain in feet. The model estimates that it will take 
minutes to hike to the top if a trail is 
miles long and ascends 
feet, as well as if a trail is 
miles long and ascends 
feet. How many minutes does the model estimates it will take to hike to the top if the trail is 
miles long and ascends 
feet?
Solution 1
Plug in the values into the equation to give you the following two equations:
\begin{align*}
69&=1.5a+800b, \\
69&=1.2a+1100b.
\end{align*}
Solving for the values and gives you that 
and 
. These values can be plugged back in showing that these values are correct.
Now, use the given mile length and foot change in elevation, giving you a final answer of 
Solution by juwushu.
See also
| 2024 AMC 10A (Problems • Answer Key • Resources) | ||
| Preceded by Problem 1 |
Followed by Problem 3 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AMC 10 Problems and Solutions | ||
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