The simplest form of this sum is 670.
Answer:
D
Seventh and eighth grade students at the school preferred an eagle mascot.
Step-by-step explanation:
Answer:
8 meals x 140 boys =1120 food
140boys +84 boys =224 boys
1120 food ÷224 boys = 5 meals
5meals to supply each boy
S=small pizzas
p=pasta dinners
s+p=1600
9s+13p=15600
multiply first equaiton by -9 and add to the second one
-9s-9p=-14400
<u>9s+13p=15600 +</u>
0s+4p=1200
4p=1200
divide by 4
p=300
sub back
s+p=1600
s+300=1600
minus 300 both sides
s=1300
1300 small pizzas
300 pasta dinners