Question

A cricket player scored 180 in the first match and 257 Run in the second match find the number of runs his should score in the 3rd match so that the average of runs in the three matches be 230

Answer 1

$(230 \times 3) - (180 + 257)$
Then your ans is 253

Answer 2

180+257+x/3=230

x+437=690

x=253