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  • Question
  • Out of three annual exams, each of maximum marks of 600, Lalit secured average marks of 55% and 60% in the first two exams. How many marks should Lalit score in 3rd test exam to make his overall average equal to 70%?


  • Options
  • A. 560
  • B. 570
  • C. 590
  • D. 500

  • Correct Answer
  • 570 

    Explanation

    Total required marks in the three examinations = (3 x 600 x 70)/100 =1260

    Marks secured in first examination = 55% of 600 = ( 600 x 55)/100 =330

    Marks secured in second examination = 60% of 600 = ( 600 x 60)/100 =360

    Thus, the required marks in third examination = 1260 - (330 + 360)
    = 1260 - 690
    = 570


  • More questions

    • 1. 
      2508 ÷ 15.02 +? x 11 = 200

    • Options
    • A. 13
    • B. 8
    • C. 3
    • D. 4
    • Discuss
    • 2. 
      When the speed of a boat in still water is 4 km/h and the rate of stream is 2 km/h, find upstream speed of the boat.?

    • Options
    • A. 6 km/h
    • B. 5 km/h
    • C. 2 km/h
    • D. 7 km/h
    • Discuss
    • 3. 
      The sum of three consecutive odd number is 57. The middle one is?

    • Options
    • A. 19
    • B. 21
    • C. 23
    • D. 17
    • Discuss
    • 4. 
      Without stoppages, the speed of a train is 150 km/h and with stoppages, it is 100 km/h. How many minutes does the train stop?

    • Options
    • A. 20
    • B. 15
    • C. 25
    • D. 45
    • Discuss
    • 5. 
      Raman's present age is three times his daughter's and nine-thirteenth of his mother's present age. The sum of the present ages of all three of them is 125 yr. What is the difference between the present ages of Raman's daughter and Raman's mother?

    • Options
    • A. 45 yr
    • B. 40 yr
    • C. 50 yr
    • D. Connot be determined
    • Discuss
    • 6. 
      A boat running upstream takes 528 min to cover a certain distance, while it takes 240 min to cover the same distance running downstream. What is the ratio between the speed of the water current, respectively?

    • Options
    • A. 2 : 1
    • B. 3 : 2
    • C. 8 : 3
    • D. Couldn't be determined
    • Discuss
    • 7. 
      Ten years ago A was half of B in age. If the ratio of their present ages is 3 : 4. What will be the total of their present ages?

    • Options
    • A. 8 years
    • B. 20 years
    • C. 35 years
    • D. 45 years
    • Discuss
    • 8. 
      In ten years, A will be twice as old as B was 10 years ago. If A is now 9 years older then B. Find the present age of B?

    • Options
    • A. 39 year
    • B. 40 year
    • C. 36 year
    • D. 49 year
    • Discuss
    • 9. 
      Mahatma Gandhi was born on October 2, 1869. The day of the week was:

    • Options
    • A. Sunday
    • B. Monday
    • C. Saturday
    • D. Friday
    • Discuss
    • 10. 
      Change 75/100 into decimal number.

    • Options
    • A. 0.075
    • B. 0.75
    • C. 0.0075
    • D. 7.5
    • Discuss


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