Question

The average weight of A, B and C is $54\frac{1}{3}$ kg, while the average weight of B, D and E is $53$ kg.
What is the average weight of A, B, C, D and E?

• A. 52.4 kg
• B. 53.2 kg
• C. 50.25 kg
• D. 51.75 kg
• E. Data inadequate

Answer 1

The correct option is E

Data inadequate

Total weight of (A + B + C) = $(54\frac{1}{3}\times 3)$ = 163 kg.

Total weight of (B + D + E) = (53$\times$3) = 159 kg

Adding both, we get: A + 2B + C + D + E = (163 +159) kg = 322 kg

So, to find the average weight of A, B, C, D and E, we have to know B's weight, which is not given.

So, the data is adequate.