Quant Test for IBPS PO Prelims Exam set – 18

Directions(1-5): What value will come in place of question mark ‘?’ in the following questions.

  1. ? = 15% of 64% of 75% of 6000
    480
    452
    400
    432
    414
    Option D
    ? = 15% of 64% of 75% of 6000
    =>?= 432

     

  2. ?^2 = 8765 – 7685 + 63*15
    30
    26
    40
    51
    45
    Option E
    ?^2 = 8765 – 7685 + 63*15
    =>?^2 = 1080 + 945
    =>?^2 = 2025
    =>? = 45

     

  3. 32^2 – 83% of 900 – 9*11 = ?
    150
    178
    162
    148
    153
    Option B
    32^2 – 83% of 900 – 9*11 = ?
    =>? = 1024 – 747 – 99
    =>? = 178

     

  4. 14% of ? = 9% of 280
    120
    130
    180
    160
    170
    Option C
    14% of ? = 9% of 280
    =>? = 180

     

  5. ?^1/2 = 16*14 – 12*18 + 352 /22
    520
    500
    555
    576
    540
    Option D
    ?^1/2 = 16*14 – 12*18 + 352 /22
    =>?^1/2 = 224 – 216 + 16
    =>?^1/2 = 8+16
    =>?^1/2 = 24
    =>? = 576

     

  6. The average age of 30 students is 16 years. If the age of the teacher is also included then the average age increased by 1 year, find the age of the teacher.
    40
    32
    47
    56
    50
    Option C
    Teacher age is T years. So, 30*16 + T = 31*17
    =>T = 47 years

     

  7. P,Q and R invested Rs. 6000 , Rs.4000 and Rs.8000 in a business. P left a business after 6 months.If after one year there was a gain of Rs.5200.Then what will be the share of P?
    1000
    1200
    1150
    1220
    1040
    Option E
    P Q R
    6000×6 4000×12 8000×12
    3 4 8
    P:Q:R = 3:4:8
    P share = 5200×(3/15) = 1040

     

  8. A 50 litre of mixture contains milk and water in the ratio 2:3. How much milk must be added to the mixture so that it contains milk and water in the proportion of 3:2.
    25
    20
    30
    32
    45
    Option A
    (20 + x)/30 = 3/2
    =>x = 25

     

  9. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
    3.20
    2.27
    1.50
    1.25
    2.20
    Option D
    Downstream =(1x 60)/10 = 6 kmph
    Rate upstream = 2 km/hr.
    Speed in still water =(6 + 2) /2= 4 kmph
    Time = 5/4 = 1.25 hrs.

     

  10. A bag contains 6 red balls and 8 green balls. Two balls are drawn at random one after one with replacement. What is the probability that-
    Both the balls are green
    12/47
    13/49
    14/47
    16/49
    10/41
    Option D
    P = (8/14)*(8/14) = 16/49

     


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