Mixed Quantitative Aptitude Questions Set 237

1. A starts a business with rs.4000 and B joins him after 3 months with rs. 16000. If total profit of the business is rs.2000, then find profit share of B.
2000
1000
1200
850
1500
Option E
Profit sharing ratio of A and B = (4000 * 12) : (16000 * 9)
= 48 : 144 = 1 : 3
profit share of B = 2000 * 3/4 = 1500

2. The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?
5 : 3
18 : 19
21 : 22
3 : 8
5 : 4
Option C
Let number of boys and girls are 7x and 8x respectively
ratio after increased =
7x * 6/5 : 8x * 11/10 = 21 : 22

3. The ratio between the present ages of P and Q is 5 : 7 respectively. If the difference between Q’s present age and P’s age after 6 years is 2 what is the total P’s and Q’s present age ?
32 years
68 years
50 years
48 years
26 years
Option D
Let present age of P and Q = 5x and 7x
7x – (5x + 6) = 2
x = 4
total = 12x = 12 * 4 = 48 years

4. The ratio of milk to water in total 56 liter of mixture is 5 : 3. If ‘x’ liter of milk and water is added in the mixture so that ratio becomes 25 : 18, then find the value of ‘x’.
20 liters
12 liters
18 liters
15 liters
22 liters
Option D
Quantity of milk in the mixture = 56 * 5/8 = 35
water = 56 * 3/8 = 21
35 + x/21 + x = 25/18
x = 15 liter

5. 4 kg of rice at rs.8 per kg is mixed with 8 kg of wheat at rs.12 per kg. What is the average price of the mixture ?
12
10.66
5
8
12
Option B
Total cost of 4 kg rice = 4 * 8 = 32
total cost of 8 kg wheat = 8 * 12 = 96
average = 128/12 = 10.66

6. Directions : What will come in place of questions marks (?) in the following questions given below ?
15% of 220 + 20 * 15 – √1156 = ?
320
300
284
299
340
Option D
33 + 300 – 34 = ?
? = 299

7. 3240 – 2240 + 2050 – 1800 = ?
2030
1250
3140
1240
1350
Option B
? = 5290 – 4040
? = 1250

8. √1296 – 30% of 120 + 40 + ? = 188
152
320
145
148
200
Option D
36 – 36 + 40 + ? = 188
? = 148

9. (18)^2 – (12)^2 + 420 – 120 = ?
320
126
440
480
520
Option D
324 – 144 + 420 – 120 = ?
? = 480

10. (15)^2 – 30 * 8 + (40)^2 = ?
1485
1575
1340
1585
1235
Option D
225 – 240 + 1600 = ?
? = 1585