Sam baby-sat for x hours and earned $75. If he baby-sits for y more hours at the same rate, his total earnings will be $100. Which of the following equations represents this situation?

75+ xy =100

75 + (75/x) y = 100

75 + (75/y) x = 100

75 + (75/xy) = 100

And say the actual answer, don't switch if I ask you "are you sure?" Bscause I dont have time for that dude. Help me with actual answer. Tell the truth.

The correct equation representing this situation is:

75 + (75/x) y = 100