Page 160 - AFCAT Solved Papers 2011 - 2019 SSBCrack eBook

) (
( 798 579 2 - 798 579 2 ` (2600 – x). Then,
)
-
+
46. (c)
( 798 579 )
+
-
´
´
´
x 7 1 + (2600 x ´ ) 9 1 = 206
100 100
´
´
Þ ( )798 + 2 ( )579 + 2 2 798 579
7x + 9 × 2600 – 9x = 20600
( - )798 - 2 ( )579 + 2 2 798 579 – 2x = 20600 – 9 × 2600
´
´
´
798 579 Þ x = 1400
53. (b) Let the total number of votes enrolled be x. Then, number of
´
´
4 798 579 votes cast = 70% of valid votes = 98% of (70% of x)
Þ = 4 60% of [98% of 70% of x] = 7203
´
798 579
47. (c) Total expenditure spent on first four months 70 ´ 98 ´ 60 ´ x = 7203
= 4 × 231.25 = ` 925 100 100 100
Total expenditure spent on next five months
´
´
´
= 5 × (231.25 + 22.75) x = 7203 100 100 100
´
´
= 5 × 254 = ` 1270 70 98 60
Total expenditure for 12 months x = 17500
= 925 + 1270 + 605 = ` 2800 54. (b) If the price of a commodity increases by R%, then the
reduction in consumption so as not to increase the
3500 2800
-
Required % = ´ 100 = 20% expenditure is
3500
é R ´ 100 % = ù 11 ´ 100 = 9.9%
+
+
48. (b) Boys Girls ê ë 100 R ú û 100 11
16.4 15.4
55. (d) Pupils from first school appeared for an examination
= 80% of 75 = 60
15.8 Pupils from second school appeared for an
examination = 55
Total pupils in second school = 75 + 10 = 85
55
0.4 0.6 Pass % of second school = ´ 100 = 64.7%
85
Boys to girls ratio = 0.4 : 0.6 or 2 : 3 56. (b) 3x + 6x + 7x = 80
49. (a) More capacity, less buckets (Indirect proportion) 16x = 80
12 : 18 : : 8 : x x = 5
´
12 = 8 Þ x = 18 8 = 12 Numbers are 15, 30, 35
16 x 12 æ R ö T
50. (c) Let the sum invested be ` x. 57. (d) A = P 1+ ç è 100 ø ÷
´
´
´
´
x 8 10 x 12 1 = 1500 Where A = Amount, P = Principal, R = Rate % per annum
+
100 100 T = Time in years
8x + 12x = 150000 26 26
´
20x = 150000 A = 1875´ 25 25
x = 7500
A = ` 2028.
1 58. (d) x = ky
51. (b) Let sum = ` x, S.I = x
5 8 = 4 k × 15
Time = 4 years, Rate = ? 8
k =
P ´ R ´ T 15
S.I.
1 0 0 x = ky
´
´
1 x R 4 x = 8 ´ 10
Þ x =
5 100 15
100 16
R = = 5% x =
´
5 4 3