Question 106

The average of five consecutive odd numbers is 95. What is the fourth number in the descending order ?

Solution

Let a be the lowest of the 5 consecutive odd numbers.

Sum of the 5 consecutive odd numbers = a + (a + 2) + (a + 4) + (a + 6) + (a + 8) = 5a + 20 = 95 x 5= 475

=> a = 91

Thus the 4th number in descending order is 93

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