An electric kettle was poured into 400 milliliters of water, filling two-ninths of its volume. How many milliliters

An electric kettle was poured into 400 milliliters of water, filling two-ninths of its volume. How many milliliters of water does a kettle hold?

If 400 ml is 2/9 of the volume of the teapot, then dividing 400 into 2 parts, we find out how many ml is 1 part. Then, multiplying the resulting value by 9 parts, we find the volume of the teapot:
(400 ml / 2) * 9 = 200 * 9 = 1800 ml.
Answer: The kettle has a volume of 1800 ml.