Answer:
Step-by-step explanation:
R=50+20t, B=150-20t they will be the same height when
50+20t=150-20t
50+40t=150
40t=100
t=2.5, usingvthis value for t in either original equation will give you the height.
h=50+20(2.5)
h=100m
Answer:
a = 2
b = 18
a/b = 1/9
Step-by-step explanation:
200+40=240
each train cost 10
take 240/10=24trains
18 dollars would be the answer
