a and b have equal amount of liquid. 120ml is poured from a to b. container b now contains 4 times as much liquid as a.how much is in a
To determine the amount of liquid in container A, we can start by assigning a variable to represent the original amount of liquid in both containers A and B. Let's call this variable "x." Since the question states that A and B initially have an equal amount of liquid, we can say that the amount of liquid in A is also x.
Next, the question tells us that 120ml is poured from A to B. This means that the new amount of liquid in container A is x - 120ml, while the amount in container B is x + 120ml.
According to the question, container B now contains 4 times as much liquid as A. Mathematically, we can express this as:
x + 120ml = 4(x - 120ml)
Now, let's solve this equation to find the value of x, which represents the amount of liquid in container A:
x + 120ml = 4x - 480ml
480ml - 120ml = 4x - x
360ml = 3x
Dividing both sides of the equation by 3, we get:
x = 360ml / 3
x = 120ml
Therefore, the amount of liquid in container A is 120ml.
let the equal amount be x ml each
after the pouring event:
a has x-120
b has x+120
b = 4a
x + 120 = 4(x-120)
x+120 = 4x - 480
etc , so easy from here on
480-120=360
360 divided by 4 = 90