Question

Pilar and Ramesh left a 20% tip after

having dinner. The amount of the tip

was $5. Pilar's dinner cost $15. Which

equation can you use to find x, the

cost of Ramesh's dinner?

A 0.2(x + 15) = 5 odnosu po

B 20x + 15 = 5

C 2x + 15 = 5

Answer 1

A 0.2(x + 15) = 5

Explanation:

Let x represent the cost of Ramesh's dinner.

Since, Pilar's dinner cost $15.

The sum of pilar and Ramesh's dinner is;

= 15 + x

And also, since the tip is 20% of the cost of their dinner;

tip = 20% of (15+x) = 0.20(15+x)

The amount of the tip is equal to $5

0.20(15+x) = 5

Which gives;

0.2(x+15) = 5

Solving the equation, we have;

x+15 = 5/0.2

x+15 = 25

x = 25-15

x = $10