Question

You went to lunch with your friend and the bill was $19 your lunch is three dollars more than your friends how much was your friends lunch

Answer 1

Let x = cost of your friend's lunch.

x + x + 3 = 19

x= 8

Answer 2

Your friend lunch bill is $8

Explanation:

The bill for you and your friend lunch = $19

Meaning the sum of your lunch bill and your friend bill is $19.

To find how much your friend bill is,

Let represent your friend bill to be x and your bill to be y.

Therefore: x + y = $19

Given that your bill is $3 more than your friend.

Simple means; your bill = your friend bill + 3

Since x represent your friend bill and y represent your bill

So

y = x + 3

Therefore from: x + y = $19

Substitute the value of y = x+3

x + y = $19

x + x + $3= $19

2x = $19 - $3

2x = 16

x = 16/2

x = $8

Since x = your friend bill.

Therefore:.

Your friend lunch bill is $8