SOLUTION: For lunch, I had a sandwich and 2 glasses of milk for a total of 660 calories. The sandwich had 2.4 times as many calories as 1 glass of milk. How many calories are in my sandwich?

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: For lunch, I had a sandwich and 2 glasses of milk for a total of 660 calories. The sandwich had 2.4 times as many calories as 1 glass of milk. How many calories are in my sandwich?      Log On


   

Question 123386This question is from textbook Algebra: structure and method: Book 1
: For lunch, I had a sandwich and 2 glasses of milk for a total of 660 calories. The sandwich had 2.4 times as many calories as 1 glass of milk. How many calories are in my sandwich? PLEASE HELP! The answer is 360 calories, but I don't know how to get there. This question is from textbook Algebra: structure and method: Book 1

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let s = calories in sandwich
Let m = calories in milk
s+%2B+2%2Am+=+660
s+=+2.4%2Am
substitute s in the 2nd equation for
S in the 1st
2.4%2Am+%2B+2%2Am+=+660
4.4%2Am+=+660
m+=+150 calories
Now find s
s+=+2.4%2Am
s+=+2.4%2A150
s+=+360 calories in sandwich