# Mixed Quantitative Aptitude Questions Set 129

1. The numerator of a fraction is decreased by 25% and the denominator is increased by 250%. If the resultant fraction is 6/5, what is the original fraction?
22/7
17/5
21/4
20/3
28/5
Option E
[x – 25x/100]/[y + 250y/100] = 6/5
=>75x/350y = 6/5
=>x /y = 28/5

2. What is the difference between the compound interests on Rs. 5000 for 1 years at 4% per annum compounded yearly and half-yearly?
4
2
6
3
8
Option B
When compounded yearly, Student = 200
When compounded half – yearly
r = 2%, n = 2
Interest = 202
Difference = 202 – 200 = 2

3. A profit of 8% is made by selling a shirt after offering a discount of 12%. If the marked price of the shirt is Rs.1080, find its cost price.
800
820
880
833
850
Option C
Cost Price = 1080*88/100*100/108 = 880

4. 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 how many months.
10 months
50 months
40 months
30 months
20 months
Option A
Let B invested money for x months. 5*7 : 7*x = 1:2
=>x = 10 months

5. How many litres of water should be added to a 30 litre mixture of milk and water containing milk and water in the ratio of 7 : 3 such that the resultant mixture has 40% water in it?
4
7
5
8
9
Option C
Let required quantity = x
21/(9+x) = 3/2
=>x = 5

6. Directions(6-10): Find the missing term ‘?’ of the following series.

7. 4,3,4,7,15, ?
38.5
30.1
33.3
29.7
32.2
Option A
*0.5+1
*1+1
*1.5+1
*2+1
? = 38.5

8. 23,55,136,200,?,231
212
200
225
218
202
Option C
+2^5,+3^4,+4^3,+5^2,+6^1
? = 225

9. 7,5,7,17,63, ?
313
309
319
330
311
Option B
*1-2
*2-3
*3-4
*4-5
*5-6
? = 309

10. 2, 60, 10, 120, 30, ?
200
210
222
230
214
Option B
1^3 + 1
4^3 – 4
2^3 + 2
5^3 – 5
3^3 + 3
6^3 – 6
? = 210

11. 11,14,19,28,43, ?
60
52
74
66
59
Option D
Double difference
? = 66