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In a club, 25 members are not adults; 30 members are adults but less than 30 years of age; and 20 members are above 30 years of age. The ratio of number of adults to the total number of members is 
  • a)
    3 : 2 
  • b)
    2 : 3 
  • c)
    5 : 3 
  • d)
    3 : 5 
Correct answer is option 'B'. Can you explain this answer?
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Solution:

Given,
- 25 members are not adults
- 30 members are adults but less than 30 years of age
- 20 members are above 30 years of age

Let's find the total number of members in the club.
Total number of members = (25 + 30 + 20) = 75

Now, let's find the number of adults in the club.
Number of adults = (30 + 20) = 50

The ratio of number of adults to the total number of members is given by,
Number of adults : Total number of members

Substituting the values, we get
50 : 75

Simplifying the ratio by dividing both sides by 25, we get
2 : 3

Therefore, the ratio of number of adults to the total number of members is 2 : 3.

Hence, the correct answer is option B.
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In a club, 25 members are not adults; 30 members are adults but less than 30 years of age; and 20 members are above 30 years of age. The ratio of number of adults to the total number of members isa)3 : 2b)2 : 3c)5 : 3d)3 : 5Correct answer is option 'B'. Can you explain this answer?
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