Matias' stepmother uses a 30%-off coupon to buy the ingredients for huevos rancheros.
She spends $28.
» What is the regular price, r, of the ingredients before the discount?
Enter the amount

$40

Step-by-step explanation:

To determine the regular price r of the ingredients before the discount, we have to consider that $28 represents 70% of the regular price as this amount has a 30% discount and with that, find the price that represents 100%:$28 → 70% r    ← 100%r=($28*100%)/70%= $40The regular price r of the ingredients before the discount is $40.