A roll of 25 m wire weighs 5 kg. How much does a 75 m roll weigh?
We know that the 75 m roll is three times bigger than the 25 m roll because 75 m / 25 m = <<75/25=3>>3
This means the 75 m roll weighs 3 times more than the 25 m roll: 5 kg * 3 = 15 Kg
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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:

Patrick has 4 hours less than twice the amount of time that Greg has left to finish his homework. Greg has six hours less than Jacob left to finish his homework. If Jacob has 18 hours left to finish his homework, calculate the total number of hours they all have left to finish their homework?If Jacob has 18 hours left to finish his homework, Greg has 18-6 = <<18-6=12>>12 hours left to finish his homework.
The total number of hours Jacob and Greg have left to finish their homework is 12+18 = <<12+18=30>>30 hours.
Patrick has 4 hours less than twice Greg has left to finish his homework, meaning Patrick has 4 hours less than 12*2 = 24 hours left to finish his homework.
Patrick has 24-4 = <<24-4=20>>20 hours left to finish his homework.
Altogether, the three have 30+20 = <<30+20=50>>50 hours left to finish their homework.
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Enid and Aaron are knitting clothes for their store. Aaron makes 10 scarves and 5 sweaters, and Enid makes 8 sweaters. If a scarf uses 3 balls of wool and a sweater uses 4 balls of wool, how many balls of wool did Enid and Aaron use in total?Aaron used 10 scarves * 3 balls of wool = <<10*3=30>>30 balls of wool to make his scarves.
He also used 5 sweaters * 4 balls of wool = <<5*4=20>>20 balls of wool to make his sweaters.
Enid used 8 sweaters * 4 balls of wool = <<8*4=32>>32 balls of wool to make her sweaters.
So in total, Aaron used 30 + 20 + 32 = <<30+20+32=82>>82 balls of wool.
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Now, solve this next question in the style of the above examples:

A roll of 25 m wire weighs 5 kg. How much does a 75 m roll weigh?

### Response:
We know that the 75 m roll is three times bigger than the 25 m roll because 75 m / 25 m = <<75/25=3>>3
This means the 75 m roll weighs 3 times more than the 25 m roll: 5 kg * 3 = 15 Kg
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