Answer:
To calculate Tom's new average, you need to know the total number of runs he scored in the three matches and the total number of runs he scored in the recent two matches.
You can use the following formula to calculate the new average:
New Average = (Total Runs + Recent Runs) / Total Matches
First you need to find the total runs he scored in the first 3 matches:
74 (average) * 3 (number of matches) = 222 runs
Then you need to find the total runs he scored in the recent two matches:
42 (runs in match 1) + 31 (runs in match 2) = 73 runs
Now you can find the new average by adding the total runs in recent two matches and total runs in the first 3 matches and divide it by the total number of matches:
(222 + 73) / 5 = 295 / 5 = 59
So, Tom's new average is 59 runs.