Question

the average weight of 12 women increases by 3 kg when a new women joins in place of one of them weighing 79 kg. what is the weight of the new woman?​

Answer 1

Answer:

85 kg

Explanation:

Average increases by 2.5 kgs.. this means that total increase in weight is 8 × 2.5 = 20 kgs.. weight of person who left= 65 kgs.... weight of new person = 20+65 = 85 kgs..

Answer 2

Solution :-

Let us assume that, the average weight of 12 women was x kg .

So,

→ Total weight of 12 women = 12 * x = 12x kg .

now, given that, a woman whose weight was 79 kg gone and a new woman let whose weight is y kg joins .

So,

→ New Total weight of 12 women = (12x - 79 + y) kg

A/q,

→ (12x - 79 + y)/12 = (x + 3)

→ 12x - 79 + y = 12x + 36

→ y - 79 = 36

→ y = 79 + 36

→ y = 115 kg (Ans.)

Hence, the weight of the new woman is 115 kg .

Learn more :-

the average age of 30 students is 9 years if the age of their teacher is included it becomes 10 years ago the age of the...

https://brainly.in/question/15081594

The average of three numbers is 28. If the smallest number is increased by 7 and the greatest number is reduced by 10, t...

https://brainly.in/question/29759097