Question

the average of 1/7 and 1/6 is
(a) 1/6
(b)1/7
(c)1/8
(d)13/84 ​

Answer 1

Answer:

1/7+1/6=13/84

=13/42÷2

=13/84

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Answer 2

Question:

The average of 1/7 and 1/6 is ____

Solution:

Average means the sum of the numbers by the number of numbers

$\textsf{Average\:=}\frac{Sum\:of\:the\:numbers}{Total \:Numbers}$

In our case , Average = $\frac{x+y}{2}$

Where x is 1/7 and y is 1/6 and total there are 2 numbers

$\frac{x+y}{2}$

$\frac{1}{7}+\frac{1}{6}\\\\\\\textsf{LCM = 42}\\\\\\(\frac{1}{7}\times\frac{6}{6})+(\frac{1}{6}\times\frac{1}{7})\\\\\\\frac{\frac{6}{42}+\frac{7}{42}}{2}\\\\\\\frac{13}{42\times2}\\\\\\=\frac{13}{84}$

Answer:

Therefore the answer is option d - $\frac{13}{84}$

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