The correct option is A 28
Number of men in the building =80
Number of women =80×62.5100=50
Men who learn to dance =8
Women who learn to sing =50×24100=12
Women who watch movies =50×15=10
Men who match movies =132×10=65
Men who learn to sing =80−65−8=7
Women who learn to dance =50−10−12=28
Number of women who learn dancing =28