12a
math: 68/85 * 100 = 80%
science: 70*0.9 = 63 number correct
b. Science
c.48
Answer:
There are 25 students in the class.
Step-by-step explanation:
Let x be the number of students in the class
12% failed and the number of students is 3
x*12% = 3
x*.12 = 3
Divide each side by .12
x * .12 /.12 = 3/.12
x =25
There are 25 students in the class
Answer:
It will take 5 hours to fill the order.
Step-by-step explanation:
Set up an equation, 40x=200, x being how many hours it will take.
Divide 40 by 200 to get x alone, x=200/40
x=5 hours.
