Answer:
$112
Step-by-step explanation:
First you must see that there are 2 variables in this problem, the bike and accesories.
If the bike and accesories are equal to $140 then, x+y=140.
If the bike is 4x the amount of the accesories then 4x=y. Substitute y in the first equasion for x+4x=140.
That means 5x=140, and solving for x you get $28. Since the bike was 4x the amount of accesories then 4*28= $112.
To check your work you can solve it again. $28+$112=$140 or 28+4*28=140.
