Question

The average weight of 60 balls is 40 grams .If the weight of bag is included the avg weight per ball increased by 3 gm .the weight of bag is ?

Answer 1

Step-by-step explanation:

Average weight of 40 balls = 4 gm

Formula:

Average = Sum of terms/Number of terms

Calculation:

New average weight of bag and balls = 4 + 0.04 = 4.04 gm

Total weight of bag and ball = 4.04 × (40 + 1) = 165.64 gm

Total weight of balls = 40 × 4 = 160gm

∴ Weight of bag = 165.64 - 160 = 5.64 gm

Answer 2

Given:

The average weight of 60 balls is 40 grams.

To Find:

If the weight of the bag is included the average weight per ball increased by 3 gm the weight of the bag is?

Solution:

We are given that the average weight of 60 balls is 40 grams so the total weight of balls will be 2400gm,

Now it says that the weight of the bag is also considered due to which the total average moves up by 3 grams, let the weight of the bag be x, we can then imply that,

$\frac{2400+x}{60+1} =43\\2400+x=2623\\x=223gm$

Because we have also taken the weight of the bag we will now consider the total number of items as 61 because we are calculating the average,

Hence, the weight of the bag is 223gm.