S=d/t ⇒d=s*t
s=speed
d=distance
t=time
The first train :
d=x
x=70 miles/h*t ⇒ x=70t (1)
The second train
d=360 miles - x
360 miles - x=80 miles/h*t ⇒360-x=80t ⇒ x=360-80t (2)
therefore, with the equations (1) and (2) we have a systeme of equations:
x=70t
x=360-80t
we can solve this system of equations by equalization method.
70t=360-80t
70t+80t=360
150t=360
t=360/150=2.4 (≈2 hour 24 minutes)
Answer: the first train meet with the second train in 2 hour 24 minutes.
Answer:
69>x
Step-by-step explanation:?
????
Answer: Option 'D' is correct.
Step-by-step explanation:
Since we have given that
Sale off = 15%
Rate of sales tax = 5%
Let y be the original price of the DVD.
Amount of sales tax would be
Amount after tax would be
y + 0.05 y = 1.05y
Now, there is off of 15%, so final cost of the DVD would be
Hence, Option 'D' is correct.
Answer:may i see an equation
18. is 50% and that is the correct answer
