SOLUTION:
Step 1:
Red Apple = 3
Green Apple = 1
Total number of Apple = 4
Step 2:
Ham sandwich = 1
Turkey sandwich = 1
Total number of sandwiches = 2
Step 3:
To find the probability that he will grab a red apple and a ham sandwich;
This is the probability of red apple multiplied by the probability of ham sandwich.

CONCLUSION:
The probability that he will grab a red apple and a ham sandwich is 3/8