Think About the Process A restaurant customer left $1.65 as a tip. The tax was 6% and the tip was 15% of the after tax cost. Which information is not needed to compute the bill after tax and tip? What
was the total bill?
Which information is not needed to solve this problem?
OA. The customer left $1.65 as a tip.
OB. The customer left a 15% tip.
C. The tax was 6%.
D. All of this information is needed to solve the problem.
The total bill is $

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.

step-by-step explanation:

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