On Monday, a local hamburger shop sold a combined total of 279 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Monday?

93

Step-by-step explanation:

Let's set this up with a system of equations.

Represent hamburgers with h, and cheeseburgers with c.

The shop sold 279 total, so our first equation is h+c=279.

The cheeseburgers were 2x the hamburgers, so c=2h.

Now we have our system.

h+c=279

c=2h

Use substitution to solve.

h+c=279

h+2h=279

3h=279

h= 93

93 hamburgers were sold on Monday.

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31