a) 5 m/s
b) 10 m/s
c) 15 m/s
d) 20 m/s
Explanation:
36 * 5/18 = 10 m/s
2. Express 25 m/s in kmph?
a) 96 kmph
b) 108 kmph
c) 72 kmph
d) 90 kmph
Explanation:
25 * 18/5 = 90 kmph
3. The speed of a train is 90 kmph. What is the distance covered by it in 10 minutes?a) 15 kmph
b) 12 kmph
c) 10 kmph
d) 5 kmph
Explanation:
90 * 10/60 = 15 kmph
4. A car covers a distance of 624 km in 6 ½ hours. Find its speed?a) 104 kmph
b) 140 kmph
c) 104 mph
d) 10.4 kmph
Explanation:
624/6 = 104 kmph
5. In what time will a railway train 60 m long moving at the rate of 36 kmph pass a telegraph post on its way?
a) 8 sec
b) 6 sec
c) 10 sec
d) 12 sec
Explanation:
T = 60/36 * 18/5 = 6 sec
6. 6. A train 240 m in length crosses a telegraph post in 16 seconds. The speed of the train is?
a) 90 kmph
b) 108 kmph
c) 72 kmph
d) 54 kmph
Explanation:
S = 240/16 * 18/5 = 54 kmph
7. The speed of a car is 90 km in the first hour and 60 km in the second hour. What is the average speed of the car?
a) 50 kmph
b) 90 kmph
c) 60 kmph
d) 75 kmph
Explanation:
S = (90 + 60)/2 = 75 kmph
8. Walking with 4/5 of my usual speed, I miss the bus by 5 minutes. What is my usual time?
a) 36 min
b) 16 min
c) 24 min
d) 20 min
Explanation:
Speed Ratio = 1:4/5 = 5:4
Time Ratio = 4:5
1 -------- 5
4 --------- 20
9. If a man walks to his office at ¾ of his usual rate, he reaches office 1/3 of an hour late than usual. What is his usual time to reach office?
a) 1/2 hour
b) 3/2 hour
c) 2 hour
d) 1 hour
Explanation:
Speed Ratio = 1:3/4 = 4:3
Time Ratio = 3:4
1 -------- 1/3
3 --------- 1 hour
10. Walking 7/6 of his usual rate, a boy reaches his school 4 min early. Find his usual time to reach the school?
a) 28 m
b) 21 m
c) 14 m
d) 35 m
Speed Ratio = 1:7/6 = 6:7
Time Ratio = 7:6
1 -------- 7
4 --------- 28 m