Special Quant Quiz for SSC CPO And CGL 2016



Dear Readers,

As SSC CGL exam is coming near, many of candidates are studying very hard for this exam and want to crack this exam very seriously. Many of candidates understand this thing that QUANTITATIVE APTITUDE Section plays a pivotal role in deciding the cut-off for candidates giving this exam, especially ADVANCED MATHS PORTION.


Friends, from now on We are starting an online quiz series of “Advanced Quant Quiz”. According to this plan, we would be publishing daily quiz of Advanced maths portion from where we would cover a topic each in it and we would update it daily. 



1. Simmons purchased a refrigerator on the terms that he is
required to pay Rs. 1500 cash down payment followed by Rs. 1020 at the end of
first year, Rs. 1003 at the end of second year and Rs. 990 at the end of third
year. Interest is charged at the rate of 10% per annum compound interest. What
is the cash price of the refrigerator?

(a) Rs.  4000                         (b)
Rs. 4100
(c) Rs. 4150                          (d) Rs. 4200

2. Alex and Bobin together can complete a work in 12 days. Alex
alone can complete in 20 days. If Bobin does the work only half a day daily,
then in how many days, Alex and Bobin together will complete the work?
(a) 10 days                           (b)
20 days
(c) 11 days                           (d)
15 days

3. Anand takes 10 days less than the time taken by Bakshi to
finish a piece of work. If both Anand and Bakshi can do it in 12 days, then the
time taken by Bakshi alone to finish the work is
(a) 30 days                           (b)
27 days
(c) 20 days                           (d)
25 days

4. A takes 5 days more than B to do a certain job and 9 days
more than C; A and B together can do the job in the same time as C. How many
days A would take to do it ?
(a) 16 days                           (b)
10 days
(c) 15 days                           (d)
20 days

5. A pipe of diameter d
can drain a certain water tank in 40 minutes. The time taken by a pipe of
diameter 2d for doing the same job in
:
(a) 5 minutes                       (b) 10 minutes
(c) 20 minutes                     (d) 80 minutes

6. Two pipes A and B can fill a water tank in 20 and 24
minutes respectively and a third pipe C can empty at the rate of 3 gallons per
minute. If A, B and C opened together fill the tank in 15 minutes, the capacity
(in gallons) of the tank is:
(a) 180                                 (b) 150
(c) 120                                 (d) 60

7. Two  bullets of
shot gun were fired at a place at an interval of 28 minutes 30 seconds. A
person approaching the firing point in his car hears the two sounds at an
interval of 27 minutes. The speed of sound is 330 m/ sec. What is the speed of
the car ?
(a) 44 km/hr                        (b) 66 km/hr
(c) 64 km/hr                        (d) 54 km/hr

8. In a race of 600 metres, Sonu beats Monu by 60 metres and
in a race of 500 metres, Monu beats Bablu by 25 metres. By how many metres will
Sonu beat Bablu in a 400 metre race ?
(a) 48 m                                (b)
52 m
(c) 56 m                                (d)
58 m

9. Two trains are running on parallel lines in the same
direction at speeds of 40 kmph and 20 kmph respectively. The faster train
crosses a man in the second trains in 36 seconds. The length of the faster
train is
(a) 200 metres                     (b) 185 metres
(c) 225 metres                     (d) 210 metres

10. A boat goes down stream at x km/h and upstream at y
km/h. The speed of the boat in still water is
(a) 0.5 (x + y)                       (b) 0.5 (x – y)

(c) x + y                               (d)
x – y 






Solutions
1. (a); Cash price of refrigerator = 1500 + 1020/1.1 + (1003)/(1.1)2 + 990/(1.1)3
= 1500 + 1020/1.1 + 1003/1.21 + 990/1.331
= 1500 + 2500
= 4000


2. (d); When Bobin works normally then days taken by Bobin to complete the work = (20 × 12)/(20 – 12) days
= 30 days
Now, If Bobin does the work only half a day daily ⇒  Bobin will take twice the total days to complete the whole work alone
⇒ Now No. of days taken by Bobin = (30 × 2) days
= 60 days
So, Now days taken by (Alex + Bobin) together to do the whole work = (20 × 60)/ (20 + 60) = 15 days


3. (a); Let time taken by Bakshi in completing the work = x day
∴ Time taken by Anand (x – 10) days
∴ 1/x + 1/(x – 10) = 1/12
⇒ (x – 4) (x – 30) = 0
⇒ x = 30 because x ≠ 4


4. (c); Let days taken by A to do the whole work = x days
So, days taken by B to do the whole work = (x – 5) days
And, days taken by C to do the whole work = (x – 9) days
According to the question
Days taken by (A + B) together to do the whole work = Days taken by C alone to do the whole work
⇒ (x (x – 5))/(x + (x – 5)) = x – 9
or, (x – 3) (x – 15) = 0
⇒ x = 3 or 15
But x = 3 is not possible as x – 5 or x – 9 will become negative.
So, x = 15 days


5.  (b); Time µ 1/(cross – sectional area of the pipe)
Time µ 1/(π/4 d2)
Time µ 1/d2
So, t2 = t1 (d1/d2)2
t= 40 minutes, d1 = d, d2 = 2d
∴ t2 = 40 (d/2d)2
t2 = 40(1/2)2
t2 = 10 minutes
⇒ time taken by a pipe of diameter 2d for doing the same job = 10 minutes


6. (c); Let the capacity of the tank be x gallons.
Quantity of water filled in the tank in 1 minute when all the pipes A, B and C are opened simultaneously = x/20 + x/24 – 3
According to the question, x/20 + x/24 – 3 = x/15
⇒ x = (3 × 120)/3 = 120 gallons


7. (b); Let speed of car = x km/hr.
Here, Distance covered by the car in 27 minutes = Distance covered by the sound in (28 minutes 30 seconds – 27 minutes)
 ⇒ x km/hr × (27/60) hr.
= (300 × 18/5 km/hr) × (1.5/60 hr)
⇒ x = 66
⇒ Speed of car = 66 km/hr.


8. (d); In the race between Sonu and Monu.
Distance travelled by Sonu and Monu in same time = 600 mtr. & (600 – 60) mtr = 600 mtr. & 540 mtr.
⇒ In the same time,
Ratio of distance travelled by Sonu & Monu = 10 : 9
Similarly,
In the same time, Ratio of distance travelled by Monu & Bablu = 500 : (500 – 25)
= 500 : 475
= 20 : 19
So, In the same time
Ratio of distance travelled by Sonu, Monu & Bablu = 10 × 20 : 9 × 20 : 9 × 19
= 200 : 180 : 171
⇒ When Sonu travels 200 m, Bablu will travel 171 m
So, When Sonu travels 400 m, Bablu will travel 342 m
⇒ In 400 m race between Sonu & Bablu,
Required No. of metres by which Sonu will win the race = 400 m – 342 m
= 58 m


9. (a); Let x = length of the faster train ( in mtr.)
So, 36 seconds = (x + 10)/((40 – 20) kmph)
⇒ x = 36 second × 20 × 5/18  m/sec
= 200 mtr.


10. (a); Speed of boat in still water = (Sdown + Sup)/2
= (x + y)/2 = 0.5 (x + y)








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