There were 20 girls and 30 boys in the second session what is the percentage of boys in the second session of swimming class
you would multiply 30 and 100 to get 3000 and then divide by 20 to get an answer of 150%.
First: 300*10=3,000
Next: 3,000/20= 150,
Finally, you're answer is
150%
One hundred and fifty percent