Debra received a $80 gift card for a coffee store. She used it in buying some coffee that cost $7.41 per pound. After buying the coffee, she had $50.36 left on her card. How many pounds of coffee did she buy?

4 pounds

Step-by-step explanation:

First, find how much she spent. To find this, find the difference between the original amount on the card, and how much was left after she bought the coffee.

Originally: $80

After Purchasing: $50.36

Subtract the 2 numbers above

80-50.36=29.64

She spent $29.64 on coffee

Now, find how many pounds she bought. To do this, make a proportion

Each pound costs $7.41, and she bought x pounds for $29.64.

1/7.41=x/29.64

Cross multiply

7.41*x=29.64*1

7.41x=29.64

Divide both sides by 7.41

7.41x/7.41=29.64/7.41

x= 4

So, she bought 4 pounds of coffee

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length