Related Questions

A car travels 180 km from A to B at 60 kilometers per hour and returns from B to A along the same route at 90 kilometers per hour. The average speed, in kilometers per hour, for the round trip is :
A 72
B 75
C 60
D 68
X lives 4 kilometers due west of Y's house. Z lives 6 kilometers due north of Y's house and 4 kilometers due west of T's house. What is the straight-line distance in kilometers from X's house to T's house?
A 4
B 5
C 8
D 10
Azman travels 20 kilometers towards north, then 30 kilometers towards east, and then 20 kilometers towards north. How many kilometers is he now from the starting point?
A 20.3
B 70
C 44.7
D 50
Jamil lives 4 kilometers due west of Rehana's house. Ajit lives 6 kilometers due north of Rehana's house and 4 kilometers due west of john's house. What is the straight line distance in kilometers from Jamil's house to John's house?
A 4
B 5
C 8
D 10
A Person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
A 7.2
B 3.6
C 8.4
D 10
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour ?
A 3.6 km/hr
B 7.2 km/hr
C 8.4 km/hr
D 10 km/hr
A person crosses a 600m long street in 5 minutes. What is his speed in km per hour ?
A 3.6
B 7.2
C 8.4
D 10
At 9:00 a. m. the train Surmal left station and two hours later the train. Titas left the same station on a parallel track in the same direction. If Surma averaged 60 kilometers per hour and Titas averaged 75 kilometers per hour, at what time did Titas pass Surma?
A 2:00 p.m.
B 5:00 p.m.
C 6:00 p.m
D 7:00 p.m.
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 student walks from his house at a speed of 2 12 K per hour and reaches his school 6 minutes late. The next day he increases his speed by 1 km per hour and reaches 6 minutes before school time. How far is the school from his house?
A 1 14km
B 1 34km
C 2 14km
D 2 34km

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