The savings from each coupon should be the same. How can you describe the savings from the first and second coupons?
$25
Practice makes perfect
We have two different coupons and want to find how large the total bill must be for the discount to be the same. We know that one of the coupons gives us $ 5 off as long as the meal cost at least twice that.
Discount Coupon2: $ 5We now need to know how large the bill must be when Coupon 1 gives the same discount, which is 20 % off the bill. Let's recall the percent proportion.
a/b=p/100
Here, the discount in dollars is the part a and p is the percent, which here is 20. Let's substitute these values into the formula and solve for b, which is the size of the bill.
