Ryan's earnings vary directly with the number of hours he works. Suppose that he worked
10 hours yesterday and earned 4150 . If he earned $120 today, how many hours did he work today?
Let x be the number of hours Ryan worked today.
We can set up the proportion:
10 hours / $150 = x hours / $120
10/150 = x/120
x = (10/150) * 120
x = 8
Ryan worked 8 hours today.