OfficialSolution:
If the average of\(a\) ,\(b\) ,\(c\) , 14 and 15 is 12. What is the average value of\(a\) ,\(b\) ,\(c\) and 29?
A.\(12\)
B.\(13\)
C.\(14\)
D.\(15\)
E.\(16\)
The average of\(a\) ,\(b\) ,\(c\) , 14 and 15 is 12 means:
\(a+b+c+14+15=5*12\) ;
\(a+b+c+29=60\).
We want to find the average of\(a\) ,\(b\) ,\(c\) and 29, so the value of\(\frac{a+b+c+29}{4}\) .
Since from above we have that\(a+b+c+29=60\) , then\(\frac{a+b+c+29}{4}=\frac{60}{4}=15\) .
Answer: D
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If the average of\(a\) ,\(b\) ,\(c\) , 14 and 15 is 12. What is the average value of\(a\) ,\(b\) ,\(c\) and 29?
A.\(12\)
B.\(13\)
C.\(14\)
D.\(15\)
E.\(16\)
The average of\(a\) ,\(b\) ,\(c\) , 14 and 15 is 12 means:
\(a+b+c+14+15=5*12\) ;
\(a+b+c+29=60\).
We want to find the average of\(a\) ,\(b\) ,\(c\) and 29, so the value of\(\frac{a+b+c+29}{4}\) .
Since from above we have that\(a+b+c+29=60\) , then\(\frac{a+b+c+29}{4}=\frac{60}{4}=15\) .
Answer: D
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Statistics : Posted by Bunuel • on 04 Nov 2022, 07:07 • Replies 1 • Views 17
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