The average of runs of a cricket player of 10 innings was 36. How many runs must he make in his next innings so as to increase his average of runs by 4 ?  Select the correct option
A) 76 B) 80 C) 85 D) 87 E) 89
Explanation:   Average = total runs / no.of innings = 36   So, total = Average x no.of innings = 36 x 10 = 360.   Now increase in avg = 4runs. So, new avg = 36+4= 
<gadget id="calculator">36+4</gadget>
<output>40</output>
40runs   Total runs= new avg x new no. of innings = 40 x 11 = 440   Runs made in the 11th inning = 440 - 360= 
<gadget id="calculator">440 - 360</gadget>
<output>80</output>
80 Answer: 80
<result>B</result>
The average of runs of a cricket player of 10 innings was 36. How many runs must he make in his next innings so as to increase his average of runs by 4 ?