The weights of three bags are in the ratio 4 : 5 : 6. If the sum of the weights of the heaviest and the lightest bag is 45 kg more than the weight of the third bag, what is the weight of the lightest bag?
Choose the correct option.
A) 45kg	B) 38kg	C) 66kg	D) 36kg	E) of these
Let the weights of the three boys be 4k, 5k and 6k respectively.   4k + 6k = 5k + 45   =&gt; 5k = 45 =&gt; k = 9   Therefore the weight of the lightest boy   = 4k = 4(9) = 36 kg.   ANSWER:36kg
<result>D</result>
The weights of three bags are in the ratio 4 : 5 : 6. If the sum of the weights of the heaviest and the lightest bag is 45 kg more than the weight of the third bag, what is the weight of the lightest bag?