Question

The average weight of the first 11 people in a group of 12 people is 95 kg. If the weight of the 12th person is 33 kg more than the average weight of the whole group, the weight of the 12th person in kg is:​

Answer 1

Step-by-step explanation:

Let the weight of 12th person be x kg.

∴ Average weight of 12 persons is = \frac{11\times 95+x}{12}\ kg

According to the question,

=> \frac{11\times 95 + x}{12} + 33 = x

=> 1045 + x + 396 = 12x

=> x = \frac{1441}{11} = 131\ kg

Hence option [D] is correct answer