621. An engineering student has to secure 36% marks to pass. He gets 130 marks and fails by 14 marks. The maximum No. of marks obtained by him is_________?
A. 300
B. 400
C. 350
D. 500

622. If the numerator of a fraction is increased by 20% and its denominator is diminished by 25% value of the fraction is 2/15. Find the original fraction.
A. 1/12
B. 1/8
C. 1/6
D. 1/4

Explanation:
X * (120/100)
—————- = 2/15
Y * (75/100)
X/Y = 1/12

623. Subtracting 10% from X is the same as multiplying X by what number?
A. 80%
B. 90%
C. 10%
D. 50%

Explanation:
X – (10/100) X = X * ?
? = 90%

624. If the price of gold increases by 50%, find by how much the quantity of ornaments must be reduced, so that the expenditure may remain the same as before?
A. 27 2/23 %
B. 33 1/3 %
C. 30%
D. 19%

625. A candidate got 35% of the votes polled and he lost to his rival by 2250 votes. How many votes were cast?
A. 7500
B. 5000
C. 6000
D. 3500

Explanation:
35%———–Lost
65%———–Win
——————
30%———-2250
100%———? => 7500

626. The tax on a commodity is diminished by 20% and its consumption increased by 15%. The effect on revenue is_________?
A. It increases by 8%
B. It decreases by 8%
C. No change in revenue
D. It increases by 10%
E. None

Explanation
100 * 100 = 10000
80 * 115 = 9200
———–
10000———–800
100———–? => 8% decrease

627. The salary of a typist was at first raised by 10% and then the same was reduced by 5%. If he presently draws Rs.1045.What was his original salary?
A. 900
B. 950
C. 1000
D. 975

Explanation:
X * (110/100) * (95/100) = 1045
X * (11/10) * (1/100) = 11
X = 1000

628. A sells his goods 50% cheaper than B but 50% dearer than C. The cheapest is_________?
A. A
B. B
C. C
D. All Alike

Explanation:
Let B = 100
A = 50
C * (150/100) = 50
3C = 100
C = 33.3 then ‘C’ Cheapest

629. Two numbers are respectively 20% and 25% more than a third number. The percentage that is first of the second is_________?
A. 80%
B. 85%
C. 96%
D. 125%

Explanation:
I II III
120 125 100
125———-120
100———–? => 96%

630. In an examination 38% of students fail in English and 61% pass in Urdu and 23% fail in both. Find the actual failure percentage?
A. 46%
B. 61%
C. 54%
D. 70%

 

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131