The average volume of water in two water bottles is 625ml. The volume of water in one of the water bottles is 4 times the volume of water in the other water bottle. Find the volume of water in each water bottle.
Let x be the volume of water in the smaller water bottle.
Then, the volume of water in the larger water bottle is 4x.
According to the problem, the average volume of water in the two water bottles is 625ml.
So, we can write the equation:
(x + 4x) / 2 = 625
Simplifying, we get:
5x / 2 = 625
Multiply both sides by 2:
5x = 1250
Divide by 5:
x = 250
Therefore, the volume of water in the smaller water bottle is 250ml, and the volume of water in the larger water bottle is 4*250 = 1000ml.