The average of runs of a cricket player of 10 innings was 33. How many runs must he make in his next innings so as to increase his average of runs by 4 ?
Choose the correct answer.
A) 77  B) 79  C) 85  D) 87  E) 89
Explanation:   Average = total runs / no.of innings = 33   So, total = Average x no.of innings = 33 x 10 = 330.   Now increase in avg = 4runs. So, new avg = 33+4= 
<gadget id="calculator">33+4</gadget>
<output>37</output>
37runs   Total runs= new avg x new no. of innings = 37 x 11 = 407   Runs made in the 11th inning = 407 - 330= 
<gadget id="calculator">407 - 330</gadget>
<output>77</output>
77 77nswer: 77
<result>A</result>
The average of runs of a cricket player of 10 innings was 33. How many runs must he make in his next innings so as to increase his average of runs by 4 ?