Question

8.4
There were 24 students from Class 7 and 20 students from Class 8 in a chess club last year. This year,
the number of Class 7 students increased by 25% but the number of Class 8 students decreased
by 10%. Was there an increase or decrease in the overall membership? Find the overall percentage
change in the membership of the club.​

Answer 1

Step-by-step explanation:

Total. no. of students in class 7 = 24

25% =

$\frac{25}{100} \times 24 = 6$

6+24= 30

Total. no. of students in class 8 = 20

10% =

$\frac{10}{100} \times 20 = 2$

2+20=22

Increase in percentage.

Overall Percentage change =

6+2=8

20+24=44

$\frac{8}{44} \times 100= 18.18$

Ans= 18.18%

Answer 2

Step-by-step explanation:

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