Question
The average of 17 numbers is 55. The average of the
first 6 numbers is 49.5 and that of the next 8 numbers is 60.5. The 16th number is 4 less than the 15th number and 6 less than the 17th number. What is the average of the 15th and 17th numbers?Solution
The correct answer is D
In a 400-metre race, ‘A’ beats ‘B’ by 20 seconds or 80 metres. Find the time taken by ‘B’ to finish the race.
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