RBI Grade B Quantitative Aptitude Quiz

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QUANTITATIVE APTITUDE QUESTIONS

Here are today’s 10 questions for Quantitative Aptitude section of RBI Grade B Officers Phase I exam.

[watupro 1]

  • Shwetha s

    Thanks for providing valuable info

  • Ankush Sinha

    10

  • vivek

    9

  • Suresh Bala

    Question 1
    Current Ages Ratio 9: 4
    After 5 Years Ratio 10:5 ( this is as good as 2:1)
    Now both the ages are increased by 5 years and from my ratios I can see it as 1.
    So 1 part corresponds to 5 and at this rate the current age of the father which is 9 parts will be 45.

    Question 2
    Assume CP is 100.
    => SP is 115 (Since sold at 15% profit)
    Now, if the same article is bought for 15% less, CP = 85 & SP = 102 (Since a gain of 20% is made)
    Now for a CP of 100, the SPs differ by 115 – 102 = 13.
    Since, in the question the SPs differed by 78, the CP must be (78/13) x 100 = 600

    Question 3
    In 1 hr, that part of the tank that will be filled is (1/2 – 1/3) = 1/6. Hence, the entire tank will be filled in 6 hrs

    Question 4
    Total Outcomes : 6^3, Fav Outcomes: 6. Hence, probability = 6/6^3 = 1/36

    Question 5
    SI @ 7% for 2 years = 14%
    CI @ 7% for 2 years = 14.49%
    Difference is 0.49% and is given as 7.35
    Principal amount which is always 100% is (100/0.49) x 7.35 = 1500

    Question 6
    18 Children take 12 days => Work requires 18 x 12 Child Days.
    Now the same number of Child Days can be contributed by 8 Children in (18 x 12)/8 = 27 days

    Question 7
    Each Student got 20%(65) = 13 Sweets
    Each Teacher got 40%(65) = 26 Sweets
    Total Sweets Required = 65 x 13 + 4 x 26 = 949
    (Notice that you can choose your answer by calculating only the unit’s digit, of course, options are allowing that here)

    Question 8
    125% is given as Rs.20 and the question is asking for 15% (increase only)
    Hence (15/125) x 20 = 2.4

    Question 9
    Downstream Speed = 13 & Upstream Speed = 7
    Speeds Ratio is 13:7
    => Times Ratio is 7:13
    From the ratio, the times differ by 6 parts and this is given as 12 hrs.
    So time taken to go Downstream which is 7 parts will be 14 hrs.
    Finally Distance = Downstream Speed x Time = 13 x 14 = 182 (Again you can use the unit’s digit shortcut to choose answer)

    Question 10
    Total Cards = 52
    Queen Club = 1 & King Heart = 1 => Fav Cards = 2
    Probability = 2/52 = 1/26

  • GauriJai

    score – 7