The volumes of three containers are in the ratio 4 : 5 : 6. If the sum of the volumes of the largest and the smallest container is is 20litres more than the weight of the third container, what is the volume of the smallest container?
Choose the correct choice from the following options:  A) 11litres  B) 19litres  C) 15litres  D) 16litres  E) None of these
Let the volumes of the three containers be 4k, 5k and 6k respectively.   4k + 6k = 5k + 20   =&gt; 5k = 20 =&gt; k = 4   Therefore the weight of the lightest boy   = 4k = 4(4) = 16 litres.   ANSWER:16litres
<result>D</result>
The volumes of three containers are in the ratio 4 : 5 : 6. If the sum of the volumes of the largest and the smallest container is is 20litres more than the weight of the third container, what is the volume of the smallest container?