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  • Question
  • In an NGO the daily average wages of 20 illiterate employees is decreased from Rs.25 to Rs.10, thus the average salary of all the literate and illiterate employees is decreased Rs.10 per day. The No. of educated employees working in the NGO is :


  • Options
  • A. 15
  • B. 20
  • C. 10
  • D. Data Insufficient

  • Correct Answer
  • 10 

    Explanation

    Total employees =  25 - 10 × 20 10 = 30

     Hence number of educated employees  = 30-20 = 10


  • Average problems


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    • 1. The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers ?

    • Options
    • A. 3.6
    • B. 4.6
    • C. 6.5
    • D. 7.3
    • Discuss
    • 2. 12 boys decided to constribute Rs. 750 each to an Orphange. Suddenly few of them boys dropped out and consequently the rest had to pay Rs. 150 more. Then the number of boys who dropped out?

    • Options
    • A. 4
    • B. 6
    • C. 2
    • D. 3
    • Discuss
    • 3. If the mean of a, b, c is M and ab + bc + ca = 0, then the mean of a2+b2+c23 is :

    • Options
    • A. M
    • B. 3 M^2
    • C. 2 (M/3)
    • D. M^2
    • Discuss
    • 4. If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ?

    • Options
    • A. 56
    • B. 64
    • C. 87
    • D. 78
    • Discuss
    • 5. 19 friends went to a restaurant for a combined weekend dinner party. 13 of them spent Rs. 79 each on their dinner and the rest spent Rs. 4 more than the average expenditure of all the 19. What was the total money spent by them?

    • Options
    • A. Rs. 1398.96
    • B. Rs. 1457.09
    • C. Rs. 1662.35
    • D. Rs. 1536.07
    • Discuss
    • 6. A man covers a journey from Meerut to Delhi by a car at an average speed of 40 km/hr. He returns back by scooter with an average speed 24 km/hr. Find his average speed during the whole journey?

    • Options
    • A. 32 kmph
    • B. 27 kmph
    • C. 30 kmph
    • D. 31 kmph
    • Discuss
    • 7. The average score of boys in an examination in a school is 81 and that of the girls is 83 and the average score of the school is 81.8. Then what will be ratio between the number of girls to the number of boys, in the examination?

    • Options
    • A. 3:2
    • B. 2:3
    • C. 4:3
    • D. 3:4
    • Discuss
    • 8. A student's average marks in five subjects is 82. If the average marks of first two subject is 86.5 and the average marks of last two subjects is 84. Find the marks of third subject?

    • Options
    • A. 69
    • B. 67
    • C. 71
    • D. 73
    • Discuss
    • 9. A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ?

    • Options
    • A. 34
    • B. 36
    • C. 35
    • D. 37
    • Discuss
    • 10. Five boxes of bananas sell for Rs. 30. how many boxes can you buy for Rs.9?

    • Options
    • A. 2
    • B. 1.5
    • C. 1.25
    • D. 2.5
    • Discuss


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