Container X contained 1200 g of sand. Container Y contained 7.2 kg of sand. After an equal amount of sand was removed from each container, Container Y now has 7 times as much sand as Container X. How much sand was removed from each container?

4 answers

7 * (1200 - r) = 7200 - r
This question is the hardest question I had ever seen!
Pretty hard
The ans is 0.2