c = 4/5(kp + m)
Divide both sides by 4/5 or multiply by 5/4
5/4c = kp + m
Subtract m from both sides
5/4c - m = kp
Divide by k on both sides
(5/4c - m) / k = p
p = (5/4c - m) / k
Answer:
The ratio of boys to girls to 5:7
Let the number of boys be 5x
Let the number of girls be 7x
5x = 30
x = 6
Now just plug in 6 for the x in 7x
and number of girls 7 x 6 = 42
80 x 90/100 = 72
Therefore there were 72 milkshakes with whipped cream that were sold.
Answer:
x = 3 and y = 3
Step-by-step explanation:
4 times 3 is 12. 2 times 3 is 6
12 minus 6 is 6
Answer:
For the second one, the area of the floor that is not covered by carpet is 40 meters.
Step-by-step explanation:
1. 8*14= 112
2. 12*6= 72
3. 112- 72= 40
