Answer:
304
Step by step:
Using your calculator 5% of 320 is 16.
Since it was a discount, you subtract 16 since you're marking it down.
320-16=304
304 is your answer
How do I know? Well, there it takes 20+20+20+20+20 to equal a hundred. We can do this same math for this problem. 16 x 20 is 320
X=20
WORK:
100+ 3x +x=180
4x+100=180
-100 -100
4x=80
divide both sides by 4
x=20
Subtract what Megan ate from the whole.
4/4-3/4 = 1/4.
Megan did not eat 1/4th of the cookie
Subtracting 10x from the given equation gives
120 = 15x
Then dividing by 15 gives
8 = x
Zorah will have to play 8 hours in order to break even (cover her expenses exactly).
kilogram is an si unit my friend
