Please help write and solve this equation: Christopher's bill for lunch was $7.92. He had 2 burgers and a water. The water cost $.20 for the cup and the tax was $.54. How much was each burger?

Question

Please help write and solve this equation: Christopher's bill for lunch was $7.92.  He had 2 burgers and a water.  The water cost $.20 for the cup and the tax was $.54. How much was each burger?

anonymous · Answer

Total bill= 7.92.
Cost of water is 0.20.
Tax is .54.

So the cost of the two burgers is 7.18. The cost for one burger is 7.18/2 (since he bought 2) is 3.59.

anonymous · Answer

That's great.  But how would you write out the equation for that?  Just the way you broke it down for me?

anonymous · Answer

$$7.92-(.20+.54)=n/2$$

anonymous · Answer

Is this right?

anonymous · Answer

7.92=.20+.54+2n.

Total cost= tax+water+2*cost of one burger.