A large fast food chain runs a promotion where 1-in-4 boxes of French fries. Suppose that some location sells 100 of these boxes of fries per day. Let X=the number of coupons won per day

0.25 * 100 = X

Step-by-step explanation:

If there is a winning ticket in 1 out of every 4 boxes of French Fries sold, then that means there is a 25% chance of getting a winning ticket (1 / 4 = 0.25). Therefore we can calculate the total amounts of winning coupons per day with the following formula.

0.25 * S = X

Where S is the amount of boxes sold and X is the amount of winning coupons. If the location sells 100 boxes then ...

0.25 * 100 = X

25 = X

We can see that the amount of winning coupons in 100 boxes sold will be 25.