On a restaurant​ table, a customer leaves ​$1.05 as a tip. Assuming that the customer left a 15​% ​tip, how much was the bill before the​ tip?

Question

I need help with this word problem

Answer 1

Let x = bill amount before the tip.

 

If a $1.05 tip was 15% of the bill then: 1.05 = 0.15x

 

So x = 1.05/0.15 = $7

Answer 2

b=Bill tip=1.05 percent=15

bill*percent/100=tip

b*15/100=1.05

b*15/100*100=1.05*100

b*15/1*1=105

b*15/1=105

b*15=105

b*15/15=105/15

b*1=7

b=7