The average of runs of a cricket player of 20 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 5 ? Choose the correct choice from the following answers:
A) 96	B) 106	C) 128	D) 137	E) 122
Average = total runs / no.of innings = 32   So, total = Average x no.of innings = 32 * 20= 
<gadget id="calculator">32 * 20</gadget>
<output>640</output>
640   Now increase in avg= 4 runs. So, new avg = 32+5= 
<gadget id="calculator">32+5</gadget>
<output>37</output>
37 runs   Total runs= new avg x new no. of innings = 37 * 21= 
<gadget id="calculator">37 * 21</gadget>
<output>777</output>
777   Runs made in the 11th inning= 777-640= 
<gadget id="calculator">777-640</gadget>
<output>137</output>
137   ANSWER:137
<result>D</result>
The average of runs of a cricket player of 20 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 5 ?