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.
Source: safalta.com
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
