6. At a farm, Ben and Kathy were each given a bucket that weighed x grams. Ben picked y grams of blueberries. The blueberries Kathy
picked were 3 times as heavy as Ben's.
(a) How heavy was Ben's bucket of blueberries in terms of x and y?
(b) How heavy was Kathy's bucket of blueberries in terms of x and y?
c) Kathy picked 400 g more blueberries than Ben. Her bucket of
blueberries weighed 900 g. How heavy was the bucket?