150 liters of a mixture of milk and water contains in the ratio 3:2. How much water should now be added so that the ratio of milk and water becomes 3:4? Choose the most appropriate option.
A) 90 liters
B) 20 liters
C) 50 liters
D) 20 liters
E) 70 liters
Milk = 3/5 * 150= 
<gadget id="calculator">3/5 * 150</gadget>
<output>90</output>
90 liters   Water= 50 liters   90 : (50+P) = 3:4   150 + 3P = 360 =&gt; P = 70   50 liters of water are to be added for the ratio become 3:4.   ANSWER:50 liters
<result>C</result>
150 liters of a mixture of milk and water contains in the ratio 3:2. How much water should now be added so that the ratio of milk and water becomes 3:4?