survey was conducted among 100 families aboute their electricity and drinking water facilities the ratio of family who have access to the elctricitity only, drinking water and neither electricity nor drinking water is 5:7:8
1. find family who have acess to drinking water in terms of x ( formula method)

Survey was conducted among 100 families aboute their electricity and drinking water facilities the ratio of family who have access to the elctricitity only, drinking water and neither electricity nor drinking water is 5:7:8

1. find family who have acess to drinking water in terms of x ( formula method)

Let's denote the number of families with access to electricity as 5x, to drinking water as 7x, and to neither electricity nor drinking water as 8x. The total number of families surveyed is 100.

The sum of these ratios is equal to the total number of families:

5

�

+

7

�

+

8

�

=

100.

5x+7x+8x=100.

Now, combine like terms:

20

�

=

100.

20x=100.

Now, solve for x:

�

=

100

20

.

x=

20

100

.

So,

�

=

5

x=5.

Now, you can find the number of families with access to drinking water (7x) by substituting the value of x:

7

�

=

7

×

5

=

35.

7x=7×5=35.

Therefore, the number of families with access to drinking water is 35.

masifakrami masifakrami · Answer 2 · 2024-01-25T15:56:19+01:00

Answer:

To find the number of families who have access to drinking water in terms of x using the formula method, we can follow these steps:

1. Identify the total number of families surveyed: In this case, the survey was conducted among 100 families.

2. Calculate the ratio of families with access to drinking water: The given ratio is 5:7:8, which means that for every 5 families with access to electricity only, there are 7 families with access to drinking water, and 8 families with access to neither electricity nor drinking water.

3. Determine the value of x: Since we want to express the number of families with access to drinking water in terms of x, we need to assign a value to x. This value can be any positive integer.

4. Use the ratio to calculate the number of families with access to drinking water: Multiply the ratio of families with access to drinking water (7) by the value of x. This will give you the number of families with access to drinking water.

For example, if x = 10, then the number of families with access to drinking water would be 7 * 10 = 70.

Remember, the value of x can vary, so you can choose any positive integer to represent it