Question

If joe drives 30 mph for 0.5 hours and then 80 mph for 2 hrs, then how far did he drive?

Answer 1

30 mph for 0.5 hrs = 15 miles

80 mph for 2 hours = 160 miles

160 +15 = 175 miles total

Answer 2

Answer: 175 miles

Step-by-step explanation:

Formula for distance : $\text{Distance=Speed x Time}$

Let v denotes the speed ,t denotes the time and d denotes the distance.

According to the given statement , we have

$v_1=30\ mph$                  $t_1=0.5\ hours$

$v_2=80 mph$                  $t_2=2\ hours$

Then, $d_1=v_1 t_1\ \ \ \ d_2=v_2t_2$

Substitute values,

$d_1=30\times0.5\ \ \ \ d_2=80\times2$

Simplify,

$d_1=15\ miles\ \ \ \ d_2=160\ miles$

Now , the total distance = $d_1+d_2$

$=15+160=175\ miles$

Hence , he drove 175 miles.