The average of five consecutive positive integers is n. If the next two integers are also included, the average of all these integers will
Options:
A . increase by 2
B . remain the same
C . increase by 1
D . increase by 1.5
Answer: Option C Answer: (c)Five consecutive integers are :x, x + 1, x + 2, x + 3 and x + 4∴ Their average= ${x+x+1+x+2+x+3+x+4}/5$= ${5x+10}/5$ = x+2New average = ${(5x+10)+x+5+x+6}/7$= ${7x+21}/7$= x + 3 Difference = x + 3 – x – 2 = 1
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