Answer:
First, we need to find how much the man spends on each category:
Food = 2/5 x Rs 12000 = Rs 4800
Education = 1/4 x Rs 12000 = Rs 3000
Clothing = 1/3 x Rs 12000 = Rs 4000
To find how much he saves, we can subtract his total expenses from his income:
Total expenses = Rs 4800 + Rs 3000 + Rs 4000 = Rs 11800
Savings = Rs 12000 - Rs 11800 = Rs 200
Therefore, the man saves Rs 200 in a month.