1, a tofu needs about 20 kg of soybeans (different mold sizes require different soybeans and different yields), and a catty of soybeans is calculated at 3 yuan 50 cents, and the raw material is 70 yuan money;

2. For one person's operation, the labor is calculated as 4 hours (the ordinary labor cost is calculated as 150 yuan one day, and the working time is 10 hour) and the labor cost is 60 yuan;

3. Other miscellaneous electricity charges are estimated by 10 yuan;

4. The cost of a tofu is 70+60+ 10= 140 yuan;

5, a tofu produced 144 pieces of tofu actually sold, a piece of tofu sold in 2 yuan, then it is 288 yuan.