A train takes 4 hours to reach a destination at a speed of 50 miles per hour. How long would it take if it traveled at 100 miles per hour instead?
The distance to the destination is 4 hours * 50 miles/hour = <<4*50=200>>200 miles.
Traveling at 100 miles per hour, it will take 200 miles / (100 miles/hour) = <<200/(100)=2>>2 hours.
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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:

Louie sells Dodge, Hyundai, and Kia vehicles, and his company has 400 vehicles for sale on the store's parking lot.  Half of the vehicles on the lot are Dodge, and there are half as many Hyundai vehicles on the lot as there are Dodge vehicles.  How many Kia vehicles are on the lot?Half of the 400 vehicles for sale on the lot are Dodges, or a total of 400/2=<<400/2=200>>200 Dodge vehicles.
Since there are half as many Hyundai vehicles on the lot as there are Dodge vehicles, then there are 200/2=<<200/2=100>>100 Hyundai vehicles on the lot.
Since the remainder of the vehicles are Kias, then there are 400-200-100=<<400-200-100=100>>100 Kia vehicles for sale on the lot.
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A boy squirrel gathers 6 walnuts and carries them to his burrow in the tree, adding to the 12 already there, and dropping 1 on the way. The girl squirrel brings 5 more walnuts to their burrow and eats 2.  How many walnuts are left?With the boy’s contribution, there are 12 + 6 = <<12+6=18>>18 walnuts.
When he drops 1, now they have 18 - 1 = <<18-1=17>>17 walnuts.
The girl adds to their stash, making the count 17 + 5 = <<17+5=22>>22 walnuts.
When the girl eats 2, the final count is 22 - 2 = <<22-2=20>>20 walnuts.
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Now, solve this next question in the style of the above examples:

A train takes 4 hours to reach a destination at a speed of 50 miles per hour. How long would it take if it traveled at 100 miles per hour instead?

### Response:
The distance to the destination is 4 hours * 50 miles/hour = <<4*50=200>>200 miles.
Traveling at 100 miles per hour, it will take 200 miles / (100 miles/hour) = <<200/(100)=2>>2 hours.
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