Question

The distance of a train from a station, varies directly with the time, t. If d = 200 miles when t = 4 hours, find d when t = 6.

Answer 1

Varying directly means

\[d = kt\]

We want to solve for 'k' first by plugging in what you know

\[200 = k(4)\]

\[k = ?\]

Answer 2

*Hint ...divide both sides by 4

Answer 3

thx

Answer 4

That's not the end of the problem

Answer 5

its not 50

Answer 6

k does = 50....now you use that to solve for what you want!

find d when t = 6.

\[d = kt\]

Replace the k with 50 that you know now...and replace t with 6

\[d = 50\times 6\]

d = ?

Answer 7

kk

Answer 8

d=300

Answer 9

That would be the answer you are looking for

Answer 10

thx man

Answer 11

no prob!