Question 1131584
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Angelo travels from Town A to Town B at an average speed of 4km/h and from Town B to Town A at an average speed of 6km/h. 
If he takes 45 minutes to complete the entire journey, find his total distance traveled.
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         Since the solution by @josgarithmetic is incorrect,  I came to bring the correct one,  which is placed below.



<pre>
d, distance between A and B


Travel from A to B  at  4 km/h  ------>  time = {{{d/4}}}  hours.

Travel from B to A  at  6 km/h  ------>  time = {{{d/6}}}  hours.


{{{d/4}}} + {{{d/6}}} = {{{3/4}}}  of an hour      <<<---=== the "time" equation


Multiply by 12 both sides.


3d + 2d = 9  ====>  5d = 9  ====>  d = {{{9/5}}} kilometers.     <U>ANSWER</U>
</pre>