Answer:
$35 per hour
Step-by-step explanation:
Data provided;
The John has 2 alternatives to choose from
Alternative 1 offers him $50 per hour
Alternative 2 offers him $35 per hour
John opts for the Alternative 1 i.e $50 per hour
Now,
The opportunity cost is given as the next high valued alternative and for the given question, we have the next high valued alternative of $35 per hour
Hence,
the opportunity cost of choosing the alternative 1 i.e job offering $50 per hour is $35 per hour