Answer:
521
Step-by-step explanation:
f = factory
fTotal = 1,700
female workers = 640
0.4 female workers are under 35
0.25 male workers are under 35
1,700 - 640 = 1,060
Male Workers = 1,060
0.4% of 640 = 256
0.2% of 1060 = 265
256 + 265 = 521
521 of workers are under the age of 35
