The ratio of the amount of water in Container X to the amount of water in Container Y is 1 : 3. The ratio of the amount of water in Container Y to the amount of water in Container Z is 9 : 7. There is 1400 $$ml$$ of water in Container Z. <hr> There is <input min="0" type="number" id ="imp5pg102q1_1" class="lineinput" placeholder="?" /> $$ml$$ in Container X.