Agree....There are 12 boys and every 2 = 6 groups 6x2
There are 24 girls and every 4 to the 2 =6 groups 6x4
(6.50 x 6)+(5.25 x 2)+10.50=60
No, unfortunately, she can't go on the field trip. She is off by two dollars.
Answer:
a 20 X 40 X x
b just a guess but 2 centimeters
c 1600 or 800 depending on what x is