Multiple choice

The average weight of Shubha, Govinda and Reshma is 65 kg. If the average weight of Shubha and Govinda be 63 kg and that of Govinda and Reshma be 70 kg, then the weight of Govinda is

  1. 41 kg

  2. 71 kg

  3. 88 kg

  4. 46 kg
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sum of weights of S, G, R = 65 * 3 = 195. Sum of S and G = 63 * 2 = 126. Sum of G and R = 70 * 2 = 140. Adding (S+G) and (G+R) gives S + 2G + R = 266. Subtracting (S+G+R) from this gives G = 266 - 195 = 71.

AI explanation

The total weight of all three people is 65 times 3, which equals 195 kg. The combined weight of Shubha and Govinda is 63 times 2 (126 kg), and the combined weight of Govinda and Reshma is 70 times 2 (140 kg). Adding these two pairs gives 266 kg, and subtracting the total weight of 195 kg leaves Govinda's weight as 71 kg.

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