Answer:
D. 1 hour and 15 minutes
Step-by-step explanation:
<h3>The truck has a head start of:</h3>
45(1/4)=15
_________________
<h3>Set a stopwatch of when the car leaves</h3>
Let <em>t </em>= Time of stopwatch when the car catches the Truck
Let <em>d </em>= distance the car travels until the car catches the truck
_______________
<h3>Truck: equation</h3>
<em>d-</em>15=45<em>t</em>
<h3>Car: equation</h3>
<em>d</em>=60<em>t</em>
<em>_________</em>
<h3>By substitution:</h3>
60<em>t - </em>15=45<em>t</em>
15<em>t </em>= 15
t=1
<h3>It will take the car 1 hr to reach the truck</h3>
____________
<h3>So, lets check this answer</h3>
<em>d</em> - 15 = 45(1)
<em>d </em>= 60
and,
<em>d</em> =60(1)
<em>d</em> =60
<h3 /><h3>The answer is 1hr and 15 minutes</h3><h3 /><h3>Hope this helps!!</h3>