Question

140 members of a football club have blue eyes 72% of the members of a football club do not have blue eyes . how many members do not have blue eyes

Answer 1

Given,

Number of members with blue eyes = 140

Percentage of members without blue eyes = 72%

To find,

The number of members who don't have blue eyes.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

The percentage of the members who have blue eyes = (100-72) = 28%

Now, let the total number of members = x

So,

x × 28/100 = 140

x = 140 × 100/28

x = 500

Number of members who don't have blue eyes = (500-140) = 360

Hence, 360 members do not have blue eyes.

Answer 2

SOLUTION

GIVEN

140 members of a football club have blue eyes 72% of the members of a football club do not have blue eyes .

TO DETERMINE

The number of members do not have blue eyes

EVALUATION

Let N be the total number of members in the football club

So the number of members who do not have blue eyes

$\displaystyle \sf{ =N \times \frac{72}{100} }$

$\displaystyle \sf{ = \frac{72N}{100} }$

So the number of members who have blue eyes

$\displaystyle \sf{ = N - \frac{72N}{100} }$

$\displaystyle \sf{ = \frac{28N}{100} }$

So by the given condition

$\displaystyle \sf{ \frac{28N}{100} = 140 }$

$\displaystyle \sf{ \implies N = 140 \times \frac{100}{28} }$

$\displaystyle \sf{ \implies N = 100 \times 5 }$

$\displaystyle \sf{ \implies N = 500 }$

Hence the required number of members who do not have blue eyes

$\displaystyle \sf{ = 500 \times \frac{72}{100} }$

$\displaystyle \sf{ = 5 \times 72}$

$\displaystyle \sf{ = 360 }$

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