Question
The average of 7 consecutive numbers is 20. Which is the largest of these numbers ??
Answer
Let the number be x.
7 consecutive numbers means = x, x+1, x+2, x+3 , x+4, x+5, x+6
Their average is given which is 20.
==>> ( x + x+1 + x+2 + x+3 + x+4 + x+5 + x+6 ) / 7 = 20
==>> ( 7x + 21 ) = 140
==>> 7x = 140 -21
==>> 7x = 119
==>> x = 17
Biggest number = x + 6
== >> 17 + 6
Biggest number == 23 !!!
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