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?
Grant has 4*90 = <<4*90=360>>360 vacations.
In total, they have 360 + 90 = <<360+90=450>>450 vacations and classes.
#### 450
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
You are solving math problems. Here are some examples of how to solve the task:

Olivia gave William 10 napkins. Amelia also gives William twice the number of napkins Olivia gave him. If William had 15 napkins before, how many napkins does he have now?After Olivia gave William 10 napkins, he ends up with 15+10= <<10+15=25>>25 napkins.
Amelia gives William twice the number of napkins given to him by Amelia which is 2*10 = <<2*10=20>>20 napkins.
The total number of napkins William has now is 20+25 = <<20+25=45>>45 napkins.
#### 45[END]

Steve finds 100 gold bars while visiting Oregon. He wants to distribute his gold bars evenly to his 4 friends. If 20 gold bars were lost on the way back to San Diego, how many gold bars will each of his 4 friends get when he returns?He only has 100 - 20 = <<100-20=80>>80 gold bars after losing 20 of them.
He then gives each of his friends 80 ÷ 4 = <<80/4=20>>20 gold bars.
#### 20[END]

Now, solve this next question in the style of the above examples:

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?

### Response:
Grant has 4*90 = <<4*90=360>>360 vacations.
In total, they have 360 + 90 = <<360+90=450>>450 vacations and classes.
#### 450