The average age of the mother and her six children is 13 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother?  Choose the correct choice from the following answers
A) 40  B) 41  C) 42  D) 43  E) 44
Total age of mother and 6 children = avg x n = 13 x (6+1)= 91   If mother is excluded new average is  (13 - 5)= 
<gadget id="calculator"> (13 - 5)</gadget>
<output>8</output>
8   so for 6 children= 6 x 8=48   so mother's age is  91 - 48= 
<gadget id="calculator"> 91 - 48</gadget>
<output>43</output>
43   Answer: Option 43
<result>D</result>
The average age of the mother and her six children is 13 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother?