Question

CLASSWORK PROBLEMS
1.The average weight of 39 Students in a class
is 23 Among them Sita is the heaviest while
Tina is the lightest. If both of them are
excluded from the class still the average
remains same. The ratio of weight of Sita to
Tina is 15:8.Then what is the weight of the
Tina?
(a) 15
(b) 16
(c) 18
(d) 19​

Answer 1

Answer:

15

Explanation:

It's because 15 + 8 = 23

so It's 15

Hope it helps you.

Thank you for asking the question.

Answer 2

Answer:

Tina's weight = 16 kilogram.

Explanation:

Suppose the weight of Sita is x kilogram

weight of Tina is y kilogram

Given that, ratio of Sita and Tina's weight is 15:8

So, x/y = 15/8 ---------(1)

Combine weight of Sita & Tina = x + y

x + y = Average weigth* (Number of person)

x + y = 23*(39 - 37) = 23*2 = 46

Now solve both the equation:

x + y = 46 ----------(2)

x = 30

y = 16

So, Weight of Tina = 16 kilogram

hope it helps you ....

follow me....