Related Questions

when a truck travels at 60 miles per hour, it uses 30 percent more gasoline to travel andy distance than it does when it travels at 50 miles per hour. The truck can travel 20 miles on a gallon of gas if it is travelling at 50 miles per hour. The truck has only 10 gallons of gas and is 160 miles from its destination. It takes 20 minutes for the truck to stop for gas . How long will it take the truck to reach its final destination if it is driven at 60 miles per hour?
A 160 minutes
B 180 minutes
C 190 minutes
D 192 minutes
A car traveled 75% of the way from town A to town B at an average speed of 50 mph. The car travels at an average speed of S mph for there remaining part of the trip. The average speed for the entire trip was 40 mph. What is the value of S, in mph?
A 25
B 30
C 20
D 10
A car traveled 75% of the way from Town A to town B at an average speed of 50 mph. The car travels at an average speed of S mph for the remaining part of the trip. The average speed for the entire trip was 40 mph. What is the value of S, in mph?
A 25
B 30
C 20
D 10
A truck travels 20 miles due north , 30 miles due east and then 20 miles due north. How many miles is the truck from the starting point?
A 20.3
B `70
C 44.7
D 50
A man travels 100 miles at 20 miles per hour, 60 miles at 30 miles per hour and 80 miles at 10 miles per hour, what is his average rate for the three trips?
A 18 miles per hr
B 17 miles per hr
C 20 miles per hr
D 16 miles per hr
On a trip of 200 miles, a man travels at the rate of 40 miles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour . What is his average speed, in miles per hour, for the total trip ?
A 400/9
B 200/9
C 90
D 50
If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph?
A 50 miles
B 100 miles
C 500 miles
D 700 miles
If two planes leave the same airport at 1 : 00 PM, how many miles apart will they be at 3 : 00 PM, if one travels directly north at 150 mph and the other travels directly west at 200 mph?
A 50 miles
B 100 miles
C 500 miles
D 700 miles
A car goes 15 miles on a gallon of octane when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 miles if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?
A 13.33
B 16.67
C 10.6
D 15
A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.
A 12
B 15
C 27
D 9

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