Jeans are a new fashion among adults

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Jeans are a new fashion among adults. Below given data provide the fraction of Indian men of age 20 years or older having five or more wearable jeans along with the fraction of the Indian population of these age groups. Find the unconditional probability of an adult 20 years or older having five or more wearable jeans.

Groups & Ages

20-24    25-34       35-49         50-64            above 65

Fraction with 5 or more jeans .26 .20 .13 .18 .14

Fraction adults 20 or older .09 .20 .31 23 17