Two hours after a truck leaves Phoenix traveling?

Question

Two hours after a truck leaves Phoenix traveling at 45 miles per hour, a car leaves to overtake the truck. If it takes the car ten hours to catch the truck, what was the car's speed?

Answer 1

54 mph.

Truck: 2 hours + 10 hours at 45 miles an hour = 12 hours at 45 mph = 540 miles.

Car: 540 miles in 10 hours = 54 miles an hour.

This is assuming no stops were made and the bladders involved were made of steel.

Answer 2

Distance covered by the car when overtaken: 45mph * (2 hours headstart + 10 hours for car to catch up) =
45*12 = 540 miles

Car's speed: = 540 miles / 10 hours = 54 mph.

Answer 3

truck travels for 12 hours (2+10)
distance travelled = 12*45 = 540

Car travels same distance in 10hours

speed of car = 540/10 = 54 miles

Answer 4

rate = distance/time
rate of truck = 45 miles/hours

the truck goes 2 hours before the car leaves
2hrs x 45mi/hr = 90mi

when the car leaves the truck is 90mi away, but still traveling 45mi/hr
after 10 hours, the truck travels 450mi
so the car catches the truck when it is 540miles away from phoenix
the car traveled 540mi in 10 hours, so that is
540/10 = 54mph

Answer 5

Let car's speed = v

So, 10v = 90 + 45*10

or 10v = 540 or v =54 mph

Answer 6

53 mph

Answer 7

54MPH