Solving Quantitative Problems - Example 6

(A)  0.1 l

(B)  0.3 l

(C)  0.4 l

(D)  0.6 l

Step 1: How much orange juice does Maria pour into bottles Y and Z altogether? In bottle X there are still 0.6 l, so Maria pours a total of 1 l - 0.6 l = 0.4 l into bottles Y and Z.

Step 2: How much orange juice is in bottle Y? Bottle Y is half as big as bottle X, so its volume is 0.5 l. It is filled 1/5 with orange juice, so it contains 0.5 l / 5 = 0.1 l of orange juice.

Step 3: How much orange juice is in bottle Z? 0.4 l - 0.1 l in bottle Y = 0.3 l.

Step 4: What is the volume of bottle Z? It is half full of orange juice, i.e. 0.3 l. So its volume is 0.3 l x 2 = 0.6 l. Bottle Z is full, so it contains 0.6 l of liquid.

(D) is therefore the correct solution.