Question

The average weight of 5 men is increased by 2 kg when one of the men whose weight is 60 kg is replaced by a new man. the weight of the new man is (

Answer 1

the weight of new man is 70 kg

Answer 2

Answer:

70 kg.

Step-by-step explanation:

Let the weight of new man be W

Let the average weight of 5 men be x

So, $x =\frac{\text{Sum of weights of 5 men}}{5}$

$5x =\text{Sum of weights of 5 men}$

One of the men whose weight is 60 kg is replaced by a new man.

So,New Sum = 5x - 60+W

The average weight of 5 men is increased by 2 kg when one of the men whose weight is 60 kg is replaced by a new man.

So,  $x+2 =\frac{5x - 60+W}{5}$

$5x+10 =5x - 60+W$

$70=W$

Hence  the weight of the new man is 70 kg.