Math question Help me?

Question

Four students split the cost of a pizza.Tim ate one third of the pizza.joe ate one fourth of the pizza.Zack ate one sixth of the pizza bob ate the remainder of the pizza. If they each paid for the portion of the pizza,and the pizza cost 10.00$ How m uch should Bob Pay?

Who ever gets it right will get best anwser

Answer 1

Bob ate = 1pie - Tim - Joe - Zack

=1-1/3-1/4-1/6

Make a common denomenator, which is 12

=12/12-4/12-3/12-2/12

=3/12 of the pizza

=1/4

The pie is $10 so he should pay 1/4 of this which is $2.50

Answer 2

Bob ate 1 - 1/3 - 1/4 - 1/6 of the pizza

= 12/12 - 4/12 - 3/12 - 2/12 = 3/12 = 1/4

So he should pay 1/4 of the cost = $2.50

Answer 3

These represent the percentage of pizza eaten.

Tim's portion is x/3.

Joe's portion is x/4.

Zack's portion is x/6.

Bob's portion is 100 - (x/3 + x/4 + x/6).

100 - (x/3 + x/4 + x/6) = 10

-(x/3 + x/4 + x/6) = -90

-(4x + 3x + 2x)/12 = -90

-9x/12 = -90

-9x = -1080

x = 120

Tim's portion is x/3 or 120/3 = 40%

Joe's portion is x/4 or 120/4 = 30%

Zack's portion is x/6 or 120/6 = 20%

Bob's portion is 100 - (x/3 + x/4 + x/6) or 100 - 90 = 10%

10% × $10 = $1

Answer 4

Its asking you what is 1/3 + 1/4 + 1/6.  Subtract that from one.

By finding a common denominator, you get

4/12 + 3/12 +2/12= 9/12, or 3/4.

1-3/4 is 1/4, or 25% of the pizza.

25% of $10.00 is $2.50, which is what Bob paid

answer=$2.50