The number of calories you burn depends on your weight. a 130 pound person burns 89 calories during 30 minutes of bowling. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

So you will need to know how to set up a ratio.

Step 1: Pick your units that you want to use. I used pounds (lbs) and calories (cals).

Step 2: Set what you know up as a ratio. We know that 130 pound person can burn 89 calories bowling so set the 130 over 89.

Step 3: Write what you know in for the the other ratio. We know that the person weighs 190 pounds, so you're going to set that equal to the other ratio and since we don't know how many calories (what we are trying to find), we are just going to set 190 over x.
**now you have a ratio**

Step 4: There are many ways to solve this problem, but I will show you the easiest to me. First you want to cross cancel. So, I look to see if 190 and 89 can go smaller which in this case they can't.

Step 5: Now we are gonna cross multiply. **If you don't know how to do that I'm going to teach you**
You're going to take your 130 and look over to the bottom right and your going to multiply that to get 130x and then your gonna do the other side to get 16910.

Step 6: Now you should have 130x=16910. After, your going to solve this, by dividing each side by 130 to get x.

Step 7: After you solve, you should get an answer of x is about 130 calories.
**I rounded this answer**

It would be 18 cm