Question

Three lemon creams +2 fudge cookies have 400 cal. Two lemon creams +3 fudge cookies have 425 cal. How many calories are in each kind of cookie?

Answer 1

Answer:lemon 70. Fudge 95

Explanation:

3L + 2F=400

2L + 3F = 425

Multiply to get inverse additives.

2( 3L + 2F)= 2(400)

-3(2L + 3F) = -3(425)

6L + 4F = 800

-6L + (-9F) = -1275

6Ls cancel out

4F-9F=-475

-5F=-475

Divide by -5

F=95

Go back and put 95 in for F.

3L + 2 (95)=400

3L+190=400

Subtract 190 from each side

3L=210.

Divide by 3.

L=70