Afreight train left miami and traveled toward the fueling station at an average speed of 60 mph. a passenger train left three hours later and traveled in the same direction but with an average speed of 72 mph. find the number of hours the freight train traveled before the passenger train caught up. a. 12 b. 15 c. 18 d. 21

The correct option is b. 15

Explanation:

We are given that a freight train travels at an average speed of 60 mph.

Also we are given that the average speed of passenger train is 72 mph.

We are also given that the freight train leaves 3 hours before passenger train. So the number of miles covered by freight train in 3 hours is:

miles.

Let X be the number of hours it takes the passenger train to catch up the freight train.

Therefore, we have:

Therefore, the passenger train will take 15 hours to catch up the freight train.

your answer is b ^w^ hope i

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.