The mean of five observations x, x+4, x+8, x+12 and x+16 is 15. What is the value of x
(a) 4 (b) 5
(c) 6 (d) 7
Answers
Answered by
1
Answer:
x = 7 will be the exact answer
Answered by
1
Answer:
(d) 7
Step-by-step explanation:
It is given that:
(x+x+4+x+8+x+12+x+16)÷5=15
=(5x+40)÷5=15
->5x+40=15×5=75
->5x=75-40=35
->x=35÷5=7
x=7
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