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Averages

Average: How to calculate Average, Average Formula, Weighted average, Mean Average, Average Questions with Solutions

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Online Aptitude Questions with Answers on Averages

Q36. **The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is?**

  1.  (mb – nc)/ (m + n) years
  2.  (mb + nc)/ (m - n) years
  3.  (mb + nc)/ (m + n) years
  4.  (mb – nc)/ (m - n) years

Solution : (mb + nc)/ (m + n) years
Q37. **The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?**

  1.  1 year
  2.  2 year
  3.  3 year
  4.  4 year

Solution : 4 year
Q38. **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 17thinnings?**

  1.  34
  2.  35
  3.  36
  4.  37

Solution : 37
Q39. **In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?**

  1.  Rs.5000
  2.  Rs.4600
  3.  Rs.5400
  4.  Rs.2300

Solution : Rs.5400

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Q40. **Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is?**

  1.  Rs.3
  2.  Rs.4.50
  3.  Rs.5.00
  4.  Rs.7.50

Solution : Rs.5.00
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