After a certain number of games a player scores an average of 1 goal per game.. In additional 10 games he scores 2 goals and the average drops to 0.8, how many games did he play

Question

This an algebra question

Answer 1

Let the number of games played initially be x

average=total runs/total number of games=x/x=1 (Given)

 

New average=(x+2)/(x+10)=0.8

x+2=(x+10)0.8

x+2=0.8x+8

x-0.8x=8-2

0.2x=6

x=6/0.2

x=30

Total number of games played =30+10=40