Emily and Kylie are 140 miles apart, traveling towards each other. If Kylie travels 12 mph and Emily travels 8 mph how long until they meet?

Question

asked Feb 17, 2022 192k views

1 Answer

Konrad Nowicki · Answer 1 · 2022-02-22T06:26:49+0000

Answer: 7 hr

Explanation:

Given

Distance between Emily and Kylie is
$140\ \text{miles}$

Speed of Emily
$v_e=12\ mph$

Speed of Kylie
$v_k=8\ mph$

Distance traveled by Emily
$\Rightarrow d_e=12t$

Distance traveled by Kylie
$\Rightarrow d_k=8t$

$\Rightarrow 12t+8t=140\\\Rightarrow 20t=140\\\Rightarrow t=7\ hr$

They will meet after 7 hour.