Question 52
If the sum of three consecutive odd numbers is 20 more than the first number. What is the middle number ?
Solution
Solution: Let us assume the three odd numbers be 2n+1, 2n+3 and 2n+5.
now as per information given:
sum of these three numbers = first number + 20
2n+1 + 2n+3 + 2n+5 = 2n+1 + 20
6n+9 = 2n+21
4n=12
n=3
Therefore the middle number is = 2n+3 = 2(3)+3= 9
Hence option E is correct option
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