Answer:
Step-by-step explanation:
Let y represent students in the class
55% of y = 78
0.55y= 78
y = 142
You just have to multiply 7 and 1 3/4 and you get 12.25 ounces
~Hope I Helped
He built 15 robots (4 + 8 + 3) = 15
he built an average of 5 robots per day....(4 + 8 + 3) / 3 = 15/3 = 5
Fnfnf kenzie said i had trttttttttt