# Mixed Quantitative Aptitude Questions Set 170

Directions(1-5): What approximate value will come in place of question mark ‘?’ in the following questions.

1. (1224)^1/2 + (485)^1/2 = ?*(360.98)^1/2
4
5
6
3
7
Option D
(1224)^1/2 + (485)^1/2 = ?*(360.98)^1/2
=>(1225)^1/2 + (484)^1/2 = ?*(361)^1/2
=>35 +22 = ?+19
=>? = 3

2. (220.82 – 149.21)/(19.9% of 89) = ?
5
6
8
7
4
Option E
(220.82 – 149.21)/(19.9% of 89) = ?
=>(221 – 149)/(20% of 90) = ?
=>? = 72/18
=>? = 4

3. (784.1 + 511.9 – 100.01)/3.99 = ?
285
300
320
410
451
Option B
(784.1 + 511.9 – 100.01)/3.99 = ?
=>(784 + 512 – 100)/4 = ?
=>? = 1196/4
=>? = 300

4. 59.980% of 599.98 + 34.99% of 499.99 = ?
500
320
440
535
480
Option D
59.980% of 599.98 + 34.99% of 499.99 = ?
=>60% of 600 + 35% of 500 = ?
=>? = 360+175
=>? = 535

5. 11.84*125.12/5.008+799.9 = ?
1200
1300
1100
1400
1000
Option C
11.84*125.12/5.008+799.9 = ?
=>12*125/5+800 = ?
=>300+800 = ?
=>? = 1100

6. Two alloys contain 40% and 35% of gold in it resp. If 24kg of first type alloy is mixed with 16 kg of second type of alloy then find the percentage of gold in the resulting mixture.
49%
44%
38%
40%
30%
Option C
First alloy quantity = 0.4*24 = 9.6 kg
Second alloy quantity = 0.35*16 = 5.6 kg
% of gold in resulting mixture = {(9.6+5.6)/(24+16)}*100 = 38%

7. The monthly incomes of Ram and Shyam is 14:15 resp. and their monthly expenditure is Rs.4600 and Rs.4500 resp. If saving of Shyam is 12.5% more than the savings of Ram. Find the monthly income of Shyam.
Rs.13500
Rs.13300
Rs.15000
Rs.12000
Rs.11200
Option A
(14x – 4600)/(15x – 4500) = 8/9
=>x = 900
Monthly income of Shyam = 15*900 = Rs.13500

8. A man travelled certain distance in three equal parts with different speeds of 12 km/hr., 16km/hr. and 20km/hr. resp. Find his average speed for the overall journey.
11.02 km/hr.
17.17 km/hr.
18.84 km/hr.
15.32 km/hr.
10.21 km/hr.
Option D
Total time taken by the man = [x/12 + x/16 + x/20]Average speed = 3x/[ x/12 + x/16 + x/20] = 15.32 km/hr.

9. A man invested Rs.20000 at simple interest for 2 years at the rate of r% and gets an interest of Rs.2000. If he invested total amount (Principal and interest) in a scheme offering simple interest at the rate of (r+3)%. Find the total interest obtained by the man from scheme after 2 years?
Rs.3450
Rs.3245
Rs.3520
Rs.3151
Rs.3320
Option C
Interest for one year = 2000/2 = Rs.1000
Rate = 1000/20000*100 = 5%
Interest earned = 22000*8%*2 = Rs.3520

10. Two dices are thrown, find the probability of getting an even number after multiplying numbers obtained from each dice.
1/2
3/4
4/7
7/9
5/7
Option B
Probability = ½*1/2+1/2*1/2+1/2*1/2
= ¾