Answer:
$812.5
Explanation:
Given: Ethan need to save at least $500.
He has saved so far $175
Ethan hope to use two-fifths of his next paycheck to cover the remaining amount.
Lets assume Ethan´s paycheck amount be "x"
First finding the remaining amount to be covered.
Remaining amount=

∴ The remaining amount to be covered is $325.
As given, Ethan hope to use two-fifths of his next paycheck to cover the remaining amount.
Now, using the inequality to find the amount of paycheck.
⇒

multiplying both side by 5
⇒

divinding both side 2
⇒

∴

Hence, Ethan must make at least $812.5 in his paycheck to cover his remaining anount to buy dirt bike.