# Mixed Quantitative Aptitude Questions Set 133

1. Work done by A in one day is four times the work done by B in one day, while the work done by B in one
day is one-third of the work done by C in one day. C alone can complete the work in 16 days. In how
many days can all the three together complete the work?
5
3
8
6
4
Option D
C = 16 days
B = 3(16)= 48 days
A = 48/4 = 12 days
All of them = 1/[1/16+1/48+1/12] = 6 days

2. A and B started a business with initial investments in the ratio 5 : 7. If after one year their profits were in the ratio 1 : 2 and the period for A’s investment was 7 months, B invested the money for?
12
10
13
16
11`
Option B
Let initial investments be 5x and 7x.
Let B invested money for months y months
(5x+7)/(7x*y) = ½
=>y = 10 months

3. A tap can empty a tank in one hour. A second tap can empty it in 30 min. If both the taps operate simultaneously, how much time is needed to empty the tank?
40
30
20
50
60
Option C
Required time = 1/[1/60+1/30] = 20 min.

4. Suhas decided to donate 15% of his salary. On the day of donation he changed his mind and donated Rs.1,650 which was 11/15th of what he had decided to donate earlier. How much is Suhas’ salary?
1100
1500
1000
1400
1600
Option B
11/15*15/100*x = 1650
=>x = Rs.1500

5. Three numbers are A,B and C are in the ratio 1:2:3 and their average is 600.if A is increases by 10% and B is decrease by 20%,then the average increased by 5%, C will be increase by ?
9
10
16
13
12
Option A
sum of A, B and C = 600 × 3 = 1800
A = 300, B = 600, C = 900
Now A = 330, B = 480
Average = 630
630 × 3 = 330 + 480 + C
C = 1080
C will be increased by 180
7802 + 132 − 8963 + 1326 =?×33
=>9260 – 8963 = ? × 33
=>? = 297/33 = 9

6. Directions(6-10): What approximate value will come in place of question mark ‘?’ in the following questions.

7. 21.9% of 650 = ? + 23.12
100
115
119
120
125
Option C
21.9% of 650 = ? + 23.12
=>142.35 = ? + 23.12
=>? = 119.23 == 119

8. 14.5% of 740 – ?% of 320 = 87.3
7
8
9
6
4
Option D
14.5% of 740 – ?% of 320 = 87.3
107.3 – 87.3 = ?/ 100 ×320
=>? = 20×100/320 = 6.25 == 6

9. 7802 + 132 − 8963 + 1326 =?×33
14
11
13
9
10
Option D
7802 + 132 − 8963 + 1326 =?×33
=>9260 – 8963 = ? × 33
=>? = 297/33 = 9

10. 85% of 420 + ?% of 1080 = 735
31
20
44
39
35
Option E
85% of 420 + ?% of 1080 = 735
=>85/ 100 ×420 + 𝑥/100 ×1080 = 735
=> x = 35

11. 30% of 1225 – 64% of 555 = ?
15
16
14
12
13
Option D
30% of 1225 – 64% of 555 = ?
=>? = 367.5 – 355.2 = 12.3 ==12