The amount of water in Siti's water bottle was halt as much as the amount of water in Fatimah's water bottle.<br>After Siti drank 50 $$ml$$ of water and Fatimah drank 150 $$ml$$ of water, the ratio of the amount of water in Siti's water bottle to the amount of water in Fatimah's water bottle became 3: 5. <hr> How much water did Fatimah have in her bottle at first? <br> <input min="0" type="number" id ="imp6pg095q3_1" class="lineinput" placeholder="?" />