A local hamburger shop sold a combined total of 639 hamburgers and cheeseburgers on Monday. There were 61 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Monday?

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Question

A local hamburger shop sold a combined total of 639 hamburgers and cheeseburgers on Monday. There were 61 fewer cheeseburgers sold than hamburgers. How many hamburgers were sold on Monday?

need it NOW D:

anonymous · Answer

suppose x is the number of hamburgers sold
suppose y is the number of cheeseburgers

what is the relationship between x and y.

anonymous · Answer

let H = # of hamburgers
C = # of cheeseburgers..
C + 61 = H...
Now, construct your equation!      H + C = 639

anonymous · Answer

Using substitution:   (C + 61) + C = 639
Then, algebra:   2c + 61 = 639...
         2C = 578
C = 289....

anonymous · Answer

If C = 289, then  H = 350

anonymous · Answer

Understood. Thanks :)

anonymous · Answer

Great!  Best of luck...