Question

The equation 2w+5j=60 is used to determine the number of water bottles w and the number of juice bottles j that can be bought fo $60. I f you purchase 4 bottles of juice, how many bottles of water can you buy?

Answer 1

Help?

Answer 2

can you help me person viewing my thing well question

Answer 3

I am looking in my pre cal book for an example.

Answer 4

ok

Answer 5

so lets see we are solving for w which is water

Answer 6

oh i see what you do is you - 5 on both sides of the equation

Answer 7

then you divide 2 on both sides of the equation

Answer 8

then you have w alone

Answer 9

Right. I am trying substitution.

Answer 10

wait that was wrong

Answer 11

\[ 2w+5j=60\] and you are told \(j=4\) so you get
\[2w+20=60\] or
\[2w=40\] then divide by 2 to find \(w\)

Answer 12

ok i am goijg to plug in the answer choices and see what i get which are A. 10
B. 15
C. 20
and
D. 25

Answer 13

its not A

Answer 14

I got 15

Answer 15

is it 8 bottles of water? is it correct?

Answer 16

j = 4
2w + 5j = 60
now sub 4 in for j
2w + 5(4) = 60
2w + 20 = 60
2w = 60 - 20
2w = 40 (divide by 2 to get w by itself)
2w/2 = 40/2
w = 20

if you purchase 4 bottles of juice, then you are purchasing 20 bottles of water, to equal a total of 60.

Answer 17

sorry :) i got 5w instead of 2w. my bad

Answer 18

Well, that makes sense. The 20.

Answer 19

yea it is not B either

Answer 20

2w+5j=60

[plug j=4]

Answer 21

Then kaboom the value of 'w' will come :)

Answer 22

or you can plug in the answer choice take alot of work but it is easier

Answer 23

You need to learn how to do it without answer choices because what if the question doesn't supply answer choices.

Answer 24

Well you can go for this when you have answer options and check

LHS=RHS

if yes then your answer option is correct

if not move on to the next :)

Answer 25

If you wanna do it and you do not have the options

2w+5j=60

[plug j=4]

Answer 26

yea that will work to and it is easy and quick

Answer 27

thank you

Answer 28

You are welcome :)