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Quantitative Aptitude

NUMERICAL ABILITY COMBINED MCQs

Total Questions : 450 | Page 6 of 45 pages
Question 51. A truck covers a distance of 330 kms at the speed of 30 kmph. What is the average speed of a car which travels a distance of 110 kms more than the truck in the same time?
  1.    42 Kmph
  2.    48 Kmph
  3.    39 Kmph
  4.    36 Kmph
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Time = Distance covered by truck/Speed

=330/30 = 11hours

Distance covered by car in 11hours = 330+110 = 440 km

∴ Average Speed of car = 440/11

= 40 kmph


Question 52. Find the missing number if the average of all the eight numbers is 472.

623,  164,  529,  425,  ____, 205,  301,  824

  1.    737
  2.    711
  3.    723
  4.    705
  5.    None of these
 Discuss Question
Answer: Option D. -> 705


(623+164+529+425+x+205+301+824)/8  =  472

=> 3071+x = 8*472

=> x = 3776-3071

=> x = 705



Question 53. The area of a circle is equal to the area of a rectangle with perimeter equal to 42 meters  and breadth equal to 8.5 meters. What is the area of the circle?
  1.    116.25 sq,mts
  2.    104.25 sq.mts
  3.    146.25 sq.mts
  4.    128.25 sq.mts
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


Length of rectangle = 42/2 - 8.5

= 12.5 meters

Area of rectangle = 12.5 * 8.5 = 106.25 sq.meter = Area of circle


Question 54. The difference between the compound interest and simple interest accrued on an amount at the end of three years at the rate of 12% is Rs.381.888. What is the amount?
  1.    Rs. 9500
  2.    Rs. 8400
  3.    Rs. 7200
  4.    Rs.8000
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


C.I = P[(1+R/100)T - 1]
= P[(1+12/100)3 - 1] = P[(28/25)3 - 1]
= P[(21952/15625) - 1]
= 6327P/15625
S.I = (P * 3 * 12)/100 = Rs. 9P/25
6327P/15625 - 9P/25 = 381.888
=> 702P/15625 = 381.888
=> P = (381.888*15625)/702
= Rs. 8500


Question 55. The average weight of 21 girls was recorded as 58 kgs. If the teacher's weight was added, the average increased by one. What was the teacher's weight?
  1.    96 Kgs
  2.    78 Kgs
  3.    80 Kgs
  4.    62 Kgs
  5.    None of these
 Discuss Question
Answer: Option C. -> 80 Kgs


Weight of the teacher = 58+22 = 80 kgs


Question 56. Directions(1-5): What should come in place of the question mark (?) in the following questions?16% of 450 ÷?% of 250 = 4.8
  1.    12
  2.    6
  3.    4
  4.    10
  5.    None of these
 Discuss Question
Answer: Option B. -> 6


(450*6)/100 ÷ (250 * ?)/100 = 4.8

=> 72 ÷(5/2 * ?) = 4.8

=>72 ÷ (4.8 * 5/2) * ? = 4.8

=> ? = (72 * 2)/(4.8*5) = 6


Question 57. √? - 11 = √1521
  1.    √2500
  2.    (28)2
  3.    √28
  4.    50
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these


√? - 11 = √1521 = 39 => √? = 39 + 11 = 50 => ? = 50 * 50 = 2500


Question 58. 19.5% of 524 = ?
  1.    102.18
  2.    122.81
  3.    120.18
  4.    112.81
  5.    None of these
 Discuss Question
Answer: Option A. -> 102.18


? = (524 * 19.5)/100 = 102.18


Question 59. 700 ÷ 70 ÷ 0.5 = ?
  1.    10
  2.    2.5
  3.    1.5
  4.    20
  5.    None of these
 Discuss Question
Answer: Option D. -> 20


? = 700/(70*0.5) = 20


Question 60. 12.8 * 4.5 * 2.2 = ?
  1.    168.27
  2.    126.72
  3.    128.27
  4.    162.72
  5.    None of these
 Discuss Question
Answer: Option B. -> 126.72


? = 12.8 * 4.5 * 2.2 = 126.72


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