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RRB Office Assistant Aptitude Test - 7
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RRB Office Assistant Aptitude Test - 7
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  • Question 1/10
    1 / -0

    A trader claims to sell vegetables at a profit of 20% over his cost price. If he uses a false weight and weighs only 800 gram instead of 1 kg, what is his overall profit percentage?

    Solutions

    Let the cost price per kg = Rs.1000

    Therefore, selling price = Rs.1200

    But the cost is only for 800g = Rs.800

     

  • Question 2/10
    1 / -0

    In an election 2 candidates are participated. 20% did not cast their votes. 500 votes declared invalid and the winner got 50% of the voting list and win by 2500 votes. Find no. of valid votes.

    Solutions

     

  • Question 3/10
    1 / -0

    A number is first decreased  by 10% and then increase by 10%. The number so obtained is 50 less than the original number. The original number is: 

    Solutions

    Let the original number = x 

    According to the question, 

     

  • Question 4/10
    1 / -0

    The present age of Romila is one-fourth of that of her father. After 6 years the father’s age will be twice the age of Kapil. If Kapil celebrated fifth birth day 8 years ago, What is Romils’s present age?

    Solutions

    Present age of Kapil = 12 years

    After 6 years,

    Kapil'sage will be 18 years.

    So, present age of Kapil's father=36-6=30

    Hence, Romila's present age = 1/4 × 30 = 7.5 years

     

  • Question 5/10
    1 / -0

    A person Invested equal amounts in two schemes A and B at the same rate of interest. Scheme A offers simple interest while scheme B offers compound interest. After two years he got Rs.1920 from scheme A as interest and Rs.2112 from scheme B. If the rate of interest is Increased by 4%. what will be the total interest after two years from both schemes?

    Solutions

    C.I. – S.I.

    = 2112 – 1920 = Rs.192

    = 4800 [(1.24)2 - 1]

    = 4800 (1.5376 – 1)

    = 4600 × 0.5376 = Rs.2580.48

    ∴ Total interest = Rs. (2304 + 2580.48) = Rs.4884.48

     

  • Question 6/10
    1 / -0

    A bag contains 4 green balls, 7 white balls and 5 red balls. A ball is drawn at random. Find the probability that it is not red.

    Solutions

    Select 1 ball from green or white colour

    Probability = [4C1 + 7C1] ÷ 16C1 = [4 + 7]÷ 16

    =  11/16

     

  • Question 7/10
    1 / -0

    A man can reach a certain place in 24 hours. If he reduces his speed by  3/8 th then he goes 90km less in that time. Find his speed per hour.

    Solutions

     

  • Question 8/10
    1 / -0

    x is greater than y by 24 and the respective ratio between x and y is 2 : 1. What is the sum of a third number z and x, if z is 1/6  of y?

    Solutions

     

  • Question 9/10
    1 / -0

    A copper wire is bent in the form of an equilateral triangle of area 43 cm2. If the same wire is bent into the form of a square, the area of the square will be

    Solutions

    Area of equilateral triangle =  √3/4 a2 =  43

    a2 = 16

    a = 4 cm

    Perimeter of equilateral triangle = 3 x 4 = 12 cm

    Therefore, perimeter of Square = 4(side) = 12 cm

    Side of square = 3 cm

    Area of square =  3 x 3 = 9 sq cm.

     

  • Question 10/10
    1 / -0

    Three numbers p, q and r are such that p is 66⅔% less than q and q is 40% less than r. Then p/q + q/r +r/p =?

    Solutions

     

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