A=alan
b=billy
c=charlie
a is 80% more than charlie means that a is 100% and billy=20%, so 20% of alan=billy
0.2a=c
b has 3/5 of c
b=3/5c
if b-150 and c+150, (c+150)=3 times (b-150)
luckily we can related c and b
b=3/5c
c+150=3(3/5c-150)
distribute
c+150=9/5c-450
add 450 both sides
c+600=9/5c
minus c both sides
600=4/5c
times 5/4 both sides
750=c
charlie has 750 stamps
billy=3/5 times c
b=3/5 times 750
b=450
allan has 80% more than billy
0.2a=b
0.2a=450
divide both sides by 0.2
a=2250
b=450
a=2250
c=750
add them
a+b+c=2250+450+750=3450 stamps
I have know idea what those symbols mean
If this was a “solve for x” problem then your answer is: x=−10+5i√6
If f(x)represents the height, then the rate of change of f(x) would be the change in height over time. Therefore, the average rate of change would represent the change in height of the water between f(4) and f(1)
Answer:
2:5
Step-by-step explanation:
Since 40% is basically 40:100, You can scale it down by a factor of 20, giving you 2:5.