Question

) A gymnasium weighs all the people that come into exercise. On one morning, it notes down the weight
of 6 people in kg as follows:
74 kg, 83 kg. 62 kg. 64 kg. 70.7 kg, 54.3 kgs.
The average of their weights is calculated but then one more person comes in to exercise. The new
average is calculated to be 69.7 kg. Find the weight of the new person?​

Answer 1

Answer:

79.9kg

Step-by-step explanation:

let 'x' be the weight of the seventh person.

average = sum of observations

                 no. of observations

              = 74 + 83 + 62 + 64 + 70.7 + 54.3 + x      =  69.7

                                         7    

              = 408 + x    = 69.7

                     7                    

              = 408 + x   = 69.7 × 7

              = 408 + x   = 418.2

              x = 418.2 - 408

                 = 79.9

I hope this is okay

                                   

Answer 2

Step-by-step explanation:

79.9 will I help you please confirm answer