55 percent. Because there are 27 students in total.
12+15= 27
and then you divide the 15 girls by the total in which you get 55 percent
Total number of peaches = 15
Percentage of blank peaches out of the total peaches = 75%
Then
Number of blank peaches out of the total peaches = (75/100) * 15
= (3/4) * 15
= 45/4
= 11 1/4
So 11 1/4 peaches are blank. If you do not want to include the fraction part of the answer, then you can take either 11 or 12 peaches to be blank as well. I hope the procedure is clear enough for you to understand. You can definitely use this simple but effective method for solving similar kind of problems in future.
She washed 30 plates from 7:30 to 7:35.....so she washed 30 plates in 5 minutes.....30/5 = 6 plates per minute
so if she started washing plates at 7:15 and ended at 7:38...how many plates did she wash....
from 7:15 to 7:38 is 23 minutes...and if she can wash 6 plates per minute, then in 23 minutes, she can wash (23 * 6) = 138 plates <==
the equation...
y = -6x + b...with b being the number of plates she started with and x being the number of minutes and y being the plates she has left to wash...I am not 100% sure on this equation...I am so sorry