# SSC CGL Tier 1 :: Quantitative Aptitude QA Test 21

## Home SSC CGL Tier 1 / Quantitative Aptitude QA Test 21 Questions and Answers

1 . Three numbers are in the ratio 1 : 2 : 3. By adding 5 to each of them, the new numbers are in the ratio 2 : 3 : 4. The numbers are –
15, 30, 45
1, 2, 3
5, 10, 15
10, 20, 30
2 . The angle of elevation of a cloud from a point h meters above the surf ace of a lake i s 30° and the angle of depression of its reflection is 60°. Then the height of the cloud above the surface of the lake is –
h $\sqrt3$ m
h m
h $\sqrt2$ m
2 h m
3 . The product of two numbers is 24 times the difference of these two numbers. If the sum of these numbers is 14, find the larger number
4
6
8
9
4 .
D
E
A
G
5 . What percent of students from institute D have come out to be successful out of the total enrolled from this institute ?
115
95
80
85
6 . What i s t he approxi mate perc entage of students successful to enrolled from institute A ?
72
76
86
96
7 . The HCF of 0.54, 1.8 and 7.2 is –
1.8
0.18
0.018
18
8 . A student bought 4 books for  120 from one book shop and 6 books for  150 from another. The average price (in rupees) was –
 27
27.50
 135
138
9 . A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is ` 855, the total profit (in rupees) is –
1425
1500
1537.50
1576
10 . The radi i of two concentric circles are 17 cm and 10 cm respectively. A straight line ABCD intersects the larger circle at the point A and D and intersects the smaller circle at the point B and C. If BC = 12 cm, then the length of AD (in cm) is –
20
24
30
34