Ryan has two jobs, babysitting his cousins and working at a coffee shop. He can only work less than 10 hours a week, due to school commitments. He earns $9 per hour for babysitting his cousins and he earns $18 per hour working at the coffee shop. Ryan wants to earn more than $72 a week, working a combination of both jobs.

4 hours each will satisfy

Step-by-step explanation:

4*9=36

4*18=72

which is more than 72

why do wages differ across industries

step-by-step explanation :

micro economists are concerned with economics on an industry or individual firm basis.

macro economists are concerned with national and international level

a and c

step-by-step explanation: