Question

A jar of juice weighs 12 lbs. 1/4 of the juice spills out. The jar of juice now weighs 9 1/2 lbs. How much does the empty jar weigh?

Answer 1

jar weighs 2 pounds and juice weighs 10 pounds originally; medal please

Answer 2

How did you get that ktklown

Answer 3

x is weight of jar. y is weight of juice. simultaneously solve

x + y = 12
x + (3/4) y = 9.5

Answer 4

I am not satisfied with this question I need a work out if possible please anyone

Answer 5

do you know how to solve simultaneous systems of linear equations?

Answer 6

Yes. I multiplied by -3/4

Answer 7

ok, so what's the problem?

Answer 8

you can multiply both equations by 4 to make the fractions go away if you want, that makes computation easier

Answer 9

If I have to explain it to a pre-algebra class that have not been introduced to systems of linear equation in what other way could it be explained?

Answer 10

are you a teacher?

Answer 11

A tutor

Answer 12

Without explicit systems of linear equations you could explain it this way:

When the juice spilled, the total weight went down by 2.5 pounds. Since that was 1/4 of the juice, the total juice weight must be 4 times 2.5, which is 10.

Since the whole package weighed 12 pounds and the juice weighed 10, that leaves 2 for the jar.

Answer 13

Alright