The show

At a show, two-fifths of the people are men, and the rest are women. 30% of the men are over 60 years old. 40% of the women are over 60 years old. What fraction of the people are less than 60 years?

Correct answer:

x =  16/25

Step-by-step explanation:

m=52=0.4 w=1m=152=51 552=5552=552=53=0.6 r1=30%=10030=103=0.3 r2=40%=10040=52=0.4  r3=1r1=1103=101 10103=1010103=10103=107=0.7 r4=1r2=152=51 552=5552=552=53=0.6  x1=m r3=52 107=5 102 7=5014=257=0.28 x2=w r4=53 53=5 53 3=259=0.36  x=x1+x2=257+259=257+9=2516=0.64

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