1, female employees are more than male employees = (5/8-3/8) ÷ 3/8×100% = 66.7%.

Male employees are less than female employees =(5/8-3/8)÷5/8× 100%=40%.

2. The first type: increased by (60-40)÷40× 100%=50%.

The second type: now it is 60÷40× 100%= 150%.

It is higher than before 150%- 1 = 50%.

3. Seawater demand = 1.23÷0.3%=4 10 ton.

4. Hit rate =100 ÷ (100+25) ×100% = 80%

5. Attendance =248÷250× 100%=99.2%

Absence rate = 1-99.2%=0.8%