Among five boxes A, B, C, D, and E; B is thrice as heavy as A. C is 40 kg heavier than E. D is three and a half times as heavy as E and C is five times as heavy as A. The weight of E is 40 kg. Which object is the lightest of all and what is its weight?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. A 16 kg
According to the question;
B = 3A
C = 40 + E
D = 3.5E
C = 5A
E = 40 kg
So,
C = 40 + 40 = 80 kg
D = 3.5 (40) = 140 kg
From C = 5A
80 = 5A
A = 16 kg
Now B = 3A
B = 3(16) = 48 kg
So, object A is the lightest and its weight is 16 kg.
Hence, Option 2 is the correct answer.