Answer:
1/ 10 ; 1/15
Step-by-step explanation:
Given that:
Fraction with brown hair = 2 /5
1/4 of brown haired girls have long hairs
2/3 of long, brown haired girls have green eyes.
Fraction of girls with long, brown hair :
1/4 of 2/5
1/4 * 2/5 = (1*2) / (4*5) = 2/ 20 = 1/10
Fraction with long, brown hair and green eyes :
2/3 of Fraction with long, brown hair :
2/3 of 1/10
2/3 * 1/10 = (2*1) / (3*10) = 2/30 = 1/15
is the number of members under 25, then we have