Total number of students = 100 Let the number of boys = x. Then, number of girls = 3x According to the question, x+3x=100 4x=100 x=100/4 x=25 Number of girls = 3×25 =75 Hence, there are 75 girls in the band.
Answer: The information you are given shows that 15% = 30. Multiply 30 by 6 and 2/3 (The number of times 15 goes into 100) and you have your answer. There are 200 people on the beach.
