Average Practice Test 1

Batting average of a cricket player for 30 innings is 40 runs.
Total number of runs = 30 × 40 = 1,200 runs.
Average of the remaining 28 innings is 38 runs.
Total number of runs = 28 × 38 = 1,064
Score of two innings which are not included =1,200−1,064=136 runs.
Let the lowest score be =x
High score =100+x
Sum of scores of the two innings = 136
x+100+x=136
2x=36
The lowest score = x = 18 runs.