Six persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of the 7th person. Choose one:
A) 69
B) 70
C) 71
D) 72
E) 73
Let ‘x’ be the average of 6 persons   Since there are 6 after 2 years the age will be increased by 2 for each. So  6*2= 
<gadget id="calculator"> 6*2</gadget>
<output>12</output>
12   69fter two years age will be=x+12   69verage age is 43   That is (x+12)/6=43   =&gt;x=246   Let ‘y’ be the 7th person age   (x+y)/7 =45   (246+y)/7=45   y=(45*7)-246= 
<gadget id="calculator">(45*7)-246</gadget>
<output>69</output>
69   69nswer 69
<result>A</result>
Six persons standing in queue with different age group, after two years their average age will be 43 and seventh person joined with them. Hence the current average age has become 45. Find the age of the 7th person.