Mean age among employees in a company. In a company there are 32 men and 59 women. Male mean age is 48.5 and female 39.2. One of the women (47 years old) ended working at the company and was replaced with a 23 year old man. 
Calculate the employees average mean age.
32 men + 59 women = 91 employees. 
48.5+39.2=87.7 (age)
87.7/91= 0,96. Where am I doing wrong?

Total men age is $32\cdot48.5+23=1575$
Total women age is $59\cdot39.2-47=2265.8$
Average age is therefore $\frac{1575+2265.8}{32+1+59-1}\approx42.2$
