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  • Question
  • There were 35 studentsina hostel.Ifthenumber of studentsbe increased by 7, the expenditure on food increases by Rs 42 per day while the average expenditure of studentsis reduced by Rs 1. What was the initial expenditure on food per day?


  • Options
  • A. Rs 432
  • B. Rs 442
  • C. Rs 420
  • D. Rs 400

  • Correct Answer
  • Rs 420 

    Explanation

    Let the original avg expenditure be x

    Total expenditure = 35x

    ?35x + 42 = (x-1) X 42

    ?35x + 42 = 42x ?42

    ?7x = 84

    ?x = 12

    So, initial expenditure = 12 X 35 = 420


  • More questions

    • 1. 
      198.995 x 12.005 + 16.25 x 6.95 =?

    • Options
    • A. 2580
    • B. 2550
    • C. 2400
    • D. 2500
    • Discuss
    • 2. 
      The face value of 8 in the numeral 458926 is?

    • Options
    • A. 8000
    • B. 8
    • C. 1000
    • D. 458000
    • Discuss
    • 3. 
      6, 9, 15, 21, 24, 28, 30?

    • Options
    • A. 25
    • B. 21
    • C. 24
    • D. 30
    • Discuss
    • 4. 
      6674 x 625 =?

    • Options
    • A. 4170160
    • B. 4072360
    • C. 4171050
    • D. 4171250
    • Discuss
    • 5. 
      If ax + by = 6, bx ? ay = 2 and x 2 + y 2 = 4, then the value of ( a 2 + b 2) would be :

    • Options
    • A. 10
    • B. 2
    • C. 4
    • D. 5
    • Discuss
    • 6. 
      What if the probability of getting a king or a queen in a single drawn from a pack of 52 cards?

    • Options
    • A. 1/26
    • B. 1/13
    • C. 2/13
    • D. None of these
    • Discuss
    • 7. 
      Find the 4th proportional to 4 , 16 and 7 ,

    • Options
    • A. 28
    • B. 29
    • C. 22
    • D. 25
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    • 8. 
      Raj sold an item for ? 6384 and incurred a loss of 30%. At what price should he have sold the item to have gained a profit of 30%

    • Options
    • A. ? 14656
    • B. ? 11856
    • C. ? 13544
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    • Discuss
    • 9. 
      (2/3) x (6/8) x (2/3) x (3/4) =?

    • Options
    • A. 0.25
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    • 10. 
      The HCF and LCM of two natural numbers are 12 and 72, respectively. What is the difference between the two numbers, if one of the number is 24?

    • Options
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    • C. 21
    • D. 24
    • Discuss


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