On Sunday a local hamburger shop sold a combined total of 36

On Sunday, a local hamburger shop sold a combined total of 366 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Sunday? hamburgers

Solution

Let Hamburgers be x and Cheeseburgers be y.

Hamburgers+Cheeseburgers=366

so, x+y=366 --------(1)

y=2x -------------(2)

put eqn 2 in eqn 1.

      x+2x=366

=> 3x=366

=> x=122