Xd = y(L-d) then divide by "y"
xd/y = L - d then add "d"
xd/y + d = L
X-jugs
y-glasses
6x+12y=21l
x=5y
6(5y)+12y=21l
x=5y
30y+12y=21l
x=5y
42y=21l
x=5y
1l=2y
x=5y
x=12,5 l
y=2,5 l
Answer:
Step-by-step explanation:
50 X 4= 200
90 X 5=450
50 X 5=250
200 + 250 = 450
Therefore it takes 5 hours for train B which is the train moving at 90 km per hr to catch up to train A.
5x+4=9 its an expression which is greater than 1 you can do almost any expression but it has to be more than one.
Hope this helps :D
