Mathematics

  1. A number is increased by 15% and then decreased by 25% and the number becomes 22 less than the original number. The original number is
    A) 140
    B) 160
    C) 100
    D) 120

  2. In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture?
    A) 1:1
    B) 2:1
    C) 3:1
    D) 1:2

  3. (a4 x a8)/a12 = ______________
    (A) a20
    (B) 1
    (C) 12
    (D) a-12

  4. A man sells an article at 5% above the cost price. If he had bought it at 5% less than what he paid for it and sold it for Rs. 2 less, he would have gained 10%. The cost price of the article is
    A) Rs. 250
    B) Rs. 400
    C) Rs. 200
    D) Rs. 350

  5. 8 years ago Arun's mother was 5 times older than Arun. After 6 years, the mother will be 3 times older than Arun. What is the present age of Arun?
    A) 14
    B) 16
    C) 20
    D) 22

  6. A tank of 35 m length and 25 m breadth, has 35000 cubic meters of water. Find the depth of the tank?
    (A) 10m
    (B) 20m
    (C) 30m
    (D) 40m

  7. Let a be a positive integer. When 89 and 125 are divided by a, the remainders are 4 and 6 respectively. Then the value of a is
    A) 15
    B) 17
    C) 9
    D) 7

  8. The number of girls in a class is half of the number of boys. The total number of students in the class can be
    (A) 54
    (B) 64
    (C) 38
    (D) 46

  9. 40% of a number is added to 120, then the result is double of the number. What is the number?
    (A) 100
    (B) 240
    (C) 150
    (D) 75

  10. In a company, 80% of the staff like green tea and 42% like black tea. If each of them like green tea or black tea and 11 like both, the total number of staff in the office is ?
    A)93
    B) 60
    C) 55
    D) 50

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