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Question 1 of 10

1. Question

1 points

Category: Quantitative Aptitude

A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time then B left the work. If A completed the rest of the work in 10 days, then B worked for

Correct

Explanation:
Let, A and B worked together for X days
(X+10)/20+X/30=1
X=6

Incorrect

Explanation:
Let, A and B worked together for X days
(X+10)/20+X/30=1
X=6

Question 2 of 10

2. Question

1 points

Category: Quantitative Aptitude

Two women, Ganga and Saraswati, working separately can mow a field in 8 hrs and 12 hrs respectively. If they work in stretches of one hour alternately, Ganga beginning at 9 am., when will the mowing be finished?

Correct

Explanation:
Work done in first two hours= 1/8+1/12= 5/24
Work done in eight hours= 5/24*4=20/24
Now, Remaining work is 4/24 and turn is of Ganga
Ganga will do in 9th hour 1/8, So work remaining is 4/24-1/8=1/24.
1/24 work will be completed by saraswati in next ½ hour.
Total time= 8+1+ 1/2 =9(1/2) hrs
Work started at 9:00 am, after 9(1/2) hrs….time will be 6:30pm

Incorrect

Explanation:
Work done in first two hours= 1/8+1/12= 5/24
Work done in eight hours= 5/24*4=20/24
Now, Remaining work is 4/24 and turn is of Ganga
Ganga will do in 9th hour 1/8, So work remaining is 4/24-1/8=1/24.
1/24 work will be completed by saraswati in next ½ hour.
Total time= 8+1+ 1/2 =9(1/2) hrs
Work started at 9:00 am, after 9(1/2) hrs….time will be 6:30pm

Question 3 of 10

3. Question

1 points

Category: Quantitative Aptitude

1 man, 3 women and 4 boys can do a work in 96 hrs; 2 men and 8 boys can do it in 80 hrs; and 2 men and 3 women can do it in 120 hrs. In how many hours can it be done by 5 men and 12 boys?

Correct

Explanation:
1M+3W+4B……96 hrs——-(1)
2M+8B…….80hrs…….so, 1M+4B….160hrs—–(2)
2M+3W……..120hrs——-(3)
From (1) and (2)
3W can do work in 160*96/(160-96)= 240hrs—-(4)
From (3) and (4)
2M can do work in 120*240/(240-120)=240hrs
So, 1M can do work in 480 hrs —-(5)
From (1), (4) and (5)
4B can do work in reverse of (1/96-1/240-1/480=1/240)hrs
1B can do work in 960 hrs—–(6)
5M+12 B can do work in reverse of {5/480+12/960=11/480}hrs
=480/11=43(7/11) hrs

Incorrect

Explanation:
1M+3W+4B……96 hrs——-(1)
2M+8B…….80hrs…….so, 1M+4B….160hrs—–(2)
2M+3W……..120hrs——-(3)
From (1) and (2)
3W can do work in 160*96/(160-96)= 240hrs—-(4)
From (3) and (4)
2M can do work in 120*240/(240-120)=240hrs
So, 1M can do work in 480 hrs —-(5)
From (1), (4) and (5)
4B can do work in reverse of (1/96-1/240-1/480=1/240)hrs
1B can do work in 960 hrs—–(6)
5M+12 B can do work in reverse of {5/480+12/960=11/480}hrs
=480/11=43(7/11) hrs

Question 4 of 10

4. Question

1 points

Category: Quantitative Aptitude

A cylindrical tank of diameter 25 cm is full of water. If 11 liters of water is drawn off, the water level in the tank will drop by

Correct

Explanation:
22/7*12.5*12.5*H=11*1000 (converted liters in cubic cm)
H=112/5cm

Incorrect

Explanation:
22/7*12.5*12.5*H=11*1000 (converted liters in cubic cm)
H=112/5cm

Question 5 of 10

5. Question

1 points

Category: Quantitative Aptitude

Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time should B be closed so that the tank is full in 18 minutes?

Correct

Explanation:
Let B closed after X minutes
X/32+18/24=1
X=8 min

Incorrect

Explanation:
Let B closed after X minutes
X/32+18/24=1
X=8 min

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

What is the number of women in the accounts department?

Correct

Explanation:
=46*8=>368*1/4=92

Incorrect

Explanation:
=46*8=>368*1/4=92

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

What is the total number of employees working in the IT department and HR department together?

Correct

Explanation:
=>46*(28+12)=1840

Incorrect

Explanation:
=>46*(28+12)=1840

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

What is the ratio of the number of men in the Production department to the number of Men in marketing department?

Correct

Explanation:
Number of men in the Production department=442(approx)
Number of Men in marketing department=498(approx)
Ratio=442/498

Incorrect

Explanation:
Number of men in the Production department=442(approx)
Number of Men in marketing department=498(approx)
Ratio=442/498

Question 9 of 10

9. Question

1 points

Category: Quantitative Aptitude

What is the ratio of the total number of the men to the total number of women working in all departments together?

Correct

Explanation:
Dept.—Total—-Men—-Women
A/c —- 368—–276—— 92
HR——-552—–276——–276
Merch—598—-498——–100(approx)
Mar.—–1058—529——–529
IT——–1288—–322——966
Prod.—–736—–442——294(approx)
Total No. of Men=2343
Total No. of Women= 2260
Ratio= 2343/2260

Incorrect

Explanation:
Dept.—Total—-Men—-Women
A/c —- 368—–276—— 92
HR——-552—–276——–276
Merch—598—-498——–100(approx)
Mar.—–1058—529——–529
IT——–1288—–322——966
Prod.—–736—–442——294(approx)
Total No. of Men=2343
Total No. of Women= 2260
Ratio= 2343/2260

Question 10 of 10

10. Question

1 points

Category: Quantitative Aptitude

The number of women in the Merchandising department forms what percent (approximately) of the total number employees in the organization?

Correct

Explanation:
No. of women in merchandising= 100
Total no. of persons=4600
% required= 100/46*100=21.7%……22%

Incorrect

Explanation:
No. of women in merchandising= 100
Total no. of persons=4600
% required= 100/46*100=21.7%……22%