Question

You have a 4 gallon jug and a 7 gallon jug, how do you measure exactly 2 gallons of water?

Someone please help!

Answer 1

Empty three gallons from the five gallon jug into the three gallon jug. ... MATH. Thus we have exactly one gallon. Also, we can obtain $11-3=8$ gallons. ... theory to a practical problem of capacity and achieving a certain volumetric measure. ... In this problem, you cannot try to solve for something directly; you must instead

Answer 2

Theres not a 5 gallon jug :L

Answer 3

i meant to say 4

Answer 4

fill the 7 gallon... then use the 7 gallon to fill the 4 gallon

you will have 3 gallons left in the 7 gallon

next step

empty the 4 gallon, and then pour in the 3 gallons remaining in the 7 gallon.

next step

refill the 7 gallon, use this to fill the 4 gallon, you will be ponly able to put in 1 gallon.

leaving 6 gallons in the 7 gallon jug.

Last step....

you should be able to work it out from here

Answer 5

fill with 7 G jug 2 times , remove 3 times with 4 G jug
= 2* 7 - 3* 4
= 14- 12

Answer 6

How do I know to fill the 7 gallon twice and the 4 gallon 4 times.. ?

Answer 7

@campbell_st I came that far aswell, I still don't understand how to finish it.

Answer 8

well you have to empty the 4 gallon...

so you have an empty 4 gallon and a 7 gallon which contains 6 gallons...

how do you get 2 gallons...?

its not hard

Answer 9

why not just fill the 4 gallon jug up half way?