QA Quiz

1. The average temperature of Monday, Tuesday, Wednesday and Thursday
was 38∘ and that of Tuesday, Wednesday, Thursday and Friday was 40∘.
If the temperature on Monday was 30∘, the temperature of Friday was :
a. 40∘
b. 39∘
c. 38∘
d. 30∘
e. 42∘

2. The average of weight of three men A,B and C is 84 kg. Another man
D joins the group and the average now becomes 80 kg. If another man E,
whose weight is 3 kg.more than that of D, replaces A, then the average
weight of B,C,D and E becomes 79 kg. The weight of A is :
a. 70 kg
b. 72 kg
c. 75 kg
d. 80 kg
e. 78 kg

3. The average age of 30 students in a class is 12 years. The average
age of a group of 5 of the students is 10 years and that of another
group of 5 of them is 14 years. The average of the remaining students
is :
a. 8 years
b. 10 years
c. 12 years
d. 14 years
e. 15 years

4.A train overtakes two persons who are walking in the same direction
in which the train is going, at the rate of 2 kmph and 4 kmph and
passes them completely in 9 and 10 seconds respectively. The length of
the train is :
a. 72 metres
b. 54 metres
c. 55 metres
d. 45 metres
e. 50 meters

5. A train travelling at 36 kmph completely crosses another train
having half its length and travelling in the opposite direction at 54
kmph, in 12 seconds. If it also passes a railway platform in 112
minutes, the length of the platform is :
a. 560 metres
b. 620 metres
c. 700 meres
d. 750 metres
e. 720 meters

6.A man travels 35 km partly at 4 km/hr and at 5 km/hr. If he covers
former distance at 5 km/hr and later distance at 4 km/hr, he could
cover 2 km more in the same time. The time taken to cover the whole
distance at original rate is
a. 9 hours
b. 7 hours
c. 9/2 hours
d. 8 hours
e. 10 hours

7. A train leaves Delhi at 6 a.m and reaches chandigarh at 10 a.m.
Another train leaves chandigarh at 8 a.m and reaches Delhi at 11.30
a.m. At what time do the two trains cross one another ?
a. 9.26 a.m
b. 9 a.m
c. 8.36 a.m
d. 8.56 a.m
e. 9.56 a.m

8.Two pipes P and Q can fill a cistern in 12 minutes and 16 minutes
respectively. Simultaneously both the pipes are opened together, then
after how much time Q should be closed so that the tank is full in 9
min ?
a. 3.5 min.
b. 4 min.
c. 4.5 min.
d. 4.75 min.
e. 5.00 min

9.A leak in the lower portion of a tank can empty the full tank in 9
hrs. An inlet pipe fills water at the rtae of 10 lit. a minute. When
the tank is full, the inlet is opened and due to leak, the tank is
empty in 16 hrs. How many litres does the cistern hold ?
a. 17,580
b. 17,960
c. 18,290
d. 12,342
e. 13,500

10.8 children and 12 men complete a certain piece of work in 9 days.
If each child takes twice the time taken by a man to finish the work,
in how many days will 12 men finish the same work ?
a. 8
b. 15
c. 9
d. 12
e. 14


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