A batsman makes a score of 66 runs in the 17th inning and thus increases his averages by 3. What is his average after 17th inning?
Answers:
A) 25	B) 31	C) 27	D) 29	E) 18
Let the average after 17 innings = x   Total runs scored in 17 innings = 17x   Average after 16 innings = (x-3)   Total runs scored in 16 innings = 16(x-3)   Total runs scored in 16 innings + 66 = Total runs scored in 17 innings   =&gt; 16(x-3) + 66 = 17x   =&gt; 16x - 48 + 66 = 17x   =&gt; x = 18   Answer is 18.
<result>E</result>
A batsman makes a score of 66 runs in the 17th inning and thus increases his averages by 3. What is his average after 17th inning?