Question

30% of the member of library are students , and 20% of these are less than 18 years old . 30 students are less than 18 year old . how many students are members ?

Answer this one plz fast​

Answer 1

Answer:

Easy Peasy!

Step-by-step explanation:

1. let total num. = a
2. so, a × 30% = total students
3. less than 18 = ((a × 30%) × 20%)
4. 30 = a × 30/100 × 20/100
5. 30 = a × 3/10 × 1/5
6. 30 × 5 × 10 / 3 = a
7. 10 × 5 × 10 = a

a = 500

total no. of students = a × 30%

= 500 × 30/100

= 5 × 30

= 150 members are students

PLEASE MARK AS BRAINLIEST