Question 714439
Please help me solve this problem? 
 Twenty-five boys and fifteen girls joined the Mathematics Club. What percent of the members were girls?

25 boys and 15 girls.

Therefore:

25 + 15 = 100%

25 + 15 = 40

40 = 100%

10% = 40/10 = 4 students

5% = 2 students

2 1/2% = 1 student


25 boys = 4 * 6 + 1

10 * 6 = 60 + 2 1/2

Therefore the percentage of boys is:

60 + 2 1/2 = 62 1/2%


15 girls = 4 * 3 + 2 + 1

4 * 3 + 2 + 1 = 12 + 2 + 1 = 15

10 * 3 + 5  + 2 1/2

30 + 5 + 2 1/2 = 37 1/2%

The percentage of girls is:

37 1/2%




Lennox Obuong
Algebra Tutor