human
There are 30 students in Ms. Leech's class. Twice as many girls as boys are in the class. There are 10 boys in the class and each boy today brought 5 cups for science activity class as Ms. Leech had instructed. If the total number of cups brought by the students in the class is 90, how many cups did each girl bring?
assistant
How many girls are in Ms. Leech's class? ** If there are 30 students in Ms. Leech's class, and the number of boys is 10, the number of girls in Ms. Leech class is 30-10=<<30-10=20>>20
How many cups did the boys bring? ** If each boy brought 5 cups for the science activity, the total number of cups brought by the boys is 5*10=<<5*10=50>>50 cups.
How many cups did the girls bring? ** The number of cups that the girls brought is 90-50=<<90-50=40>>40 of the total number.
How many cups did each girl bring? ** Since the number of girls in the class is 20, each girl brought 40/20=2 cups each.
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