Grant has 4*90 = <<4*90=360>>360 vacations.

In total, they have 360 + 90 = <<360+90=450>>450 vacations and classes.

# Answer

450
Question:
Grant has four times as many vacations as Kelvin has classes. If Kelvin has 90 classes, how many vacations and classes do Grant and Kelvin have altogether?
Answer:
Let's think step by step.

user
450
Grant has four times as many vacations as Kelvin has classes. If Kelvin has 90 classes, how many vacations and classes do Grant and Kelvin have altogether?
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