Question

Q5. In a school Rohan is club coordinator, help him to find the number of students in each club using expressions. There are ‘n’ number of students in science club of a school, find the expression for the following
(i) The number of students in Eco club are 3 less than twice of students opted for science club.
(ii) Students opted for creativity club are 10 less than the number of students opted for Eco club.
(iii) Number of students in cultural club is 5 more than the number of students in Eco club.
(iv) If there are 20 students in science club, Find the number of students in each club.​

Answer 1

Step-by-step explanation:

Given that in there are ‘n’ number of students in science club of a school.

(i) The number of students in Eco club are 3 less than twice of students opted for science club.

→ 2(n) - 3

(ii) Students opted for creativity club are 10 less than the number of students opted for Eco club.

→ 2n - 3 - 10

→ 2n - 13

(iii) Number of students in cultural club is 5 more than the number of students in Eco club.

→ 2n - 3 + 5

→ 2n + 2

→ 2(n + 1)

(iv) If there are 20 students in science club, Find the number of students in each club. (n = 20)

1. Eco club: 2n - 3 = 2(20) - 3 = 40 - 3 = 37
2. Creativity club: 2(20) - 13 = 40 - 13 = 27
3. Cultural club: 2(20) + 2 = 40 + 2 = 42