1. The average of five numbers is 56.4. The average of the first and the second number is 53. The average of the fourth and the fifth number is 56. What is the third number ?
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By: anil on 05 May 2019 01.16 am
Average of 5 numbers is given as 56.4 Total of 5 numbers = Average x Number of Elements Total of 5 numbers = 56.4 x 5 = 282 Average of 1st and 2nd number is 53 Total of 1st and 2nd number = 53 x 2 = 106 Average of 4th and 5th number is 56 total of 4th and 5th number = 56 x 2 = 112 1st + 2nd + 3rd +4th +5th = 282 106 + 3rd + 112 = 282 3rd = 64 hence option E is correct
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