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 for $60. If you purchase 4 bottles of juice, how many bottles of water can you buy?

Question

jhonyy9 · Answer

@Chami do you can explain how you ve got this result ? thank you in advance

Chami · Answer

@jhonyy9 Ok. So if you purchase 4 bottles of juice then you have to plug in 4 for j. 
2w + 5(4) = 60
Then solve for w.
5x4 = 20 so subtract 20 from both sides
2w = 40
Then divide 2 by both sides
w = 20

jhonyy9 · Answer

good job - congrats