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  • Question
  • The average number of visitors of a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60.If the number of visitors on the 1st and 5th days were in the ratio 8 : 9. Then what is the number of visitors on the 5th day of the library ?


  • Options
  • A. 54
  • B. 64
  • C. 68
  • D. 72

  • Correct Answer
  • 72 

    Explanation

    If number of visitors on 1st, 2nd, 3rd, 4th & 5th day are k, l, m, n & o respectively, then
    k + l + m + n = 58 x 4 = 232 ---- (i) &
    l + m + n + o = 60 x 4 = 240 ---- (ii)
    Subtracting (i) from (ii), we get
    o-k = 8 ---(iii)
    Given, k/o = 8/9 ----(iv)
    So from (iii) & (iv), we get
    a = 64, e = 72
    Therefore, number of visitors on 5th day is 72.

  • Tags: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO

    Simplification problems


    Search Results


    • 1. Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to ___ ?

    • Options
    • A. 3.7
    • B. 2.7
    • C. 3.6
    • D. 2.9
    • Discuss
    • 2. Simplify and find '?' 48?+32? = 320

    • Options
    • A. 4
    • B. 8
    • C. 16
    • D. 32
    • Discuss
    • 3. Solve this inequality 3b - 7 < 32?

    • Options
    • A. b = 13
    • B. b < 13
    • C. b > = 13
    • D. b < = 13
    • Discuss
    • 4. A man could buy a certain number of notebooks for Rs.300. If each notebook cost is Rs.5 more, he could have bought 10 notebooks less for the same amount. Find the price of each notebook ?

    • Options
    • A. 15
    • B. 20
    • C. 10
    • D. 8
    • Discuss
    • 5. 217 x 217 + 183 x 183 = ?

    • Options
    • A. 84521
    • B. 87487
    • C. 80578
    • D. 78458
    • Discuss
    • 6. Twenty times a positive integer is less than its square by 96. What is the integer ?

    • Options
    • A. 42
    • B. 36
    • C. 48
    • D. 24
    • Discuss
    • 7. In a slip test, K got the 15th rank and he was 44th from the bottom of the list of passed students. 4 students did not take up the slip test and 3 students were failed. What is the total strenght of the class ?

    • Options
    • A. 63
    • B. 62
    • C. 64
    • D. 65
    • Discuss
    • 8. Simplify the following : 373+353+283-3x37x35x28372+352+282-37x35-35x28-37x28 ?

    • Options
    • A. 100
    • B. 1
    • C. 4
    • D. 0
    • Discuss
    • 9. If 3x+7=x2+p=7x+5 , what is the value of P ?

    • Options
    • A. 17/2
    • B. 25/3
    • C. 33/4
    • D. 41/5
    • Discuss
    • 10. An owner of a Dry fruits shop sold small packets of mixed nuts for Rs. 150 each and large packets for Rs. 250 each. One day he sold 5000 packets, for a total of Rs. 10.50 lakh. How many small packets were sold ?

    • Options
    • A. 2000
    • B. 3000
    • C. 2500
    • D. 3500
    • Discuss


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