Ahospital cafeteria has 20
tables.
65%
of the tables have 6
chairs at each table.
the remaining 35%
35
%
of the tables have 4
4
chairs at each table.
complete the model.
then complete the statements to find the total number of chairs in the hospital cafeteria.

Step-by-step explanation:

Givens

The question is, what's the total number of chairs in the cafeteria?

We know by given that 100% represents 20 tables. We can use the rule of three, to find the number that represents a 65%, that is, if 100% is 20 tables, 65% how many tables would be?

There are 13 tables of 6 chairs at each table.

Similarly, if 100% represents 20 tables, 35% how many tables would represent?

There are 7 tables of 4 chairs at each table.

Then, we need to multiply to find the total number of chairs.

We know that there are 13 tables of 6 chairs, so

We also know that there are 7 tables of 4 chairs, so

Therefore, the total number of chairs is

There are 106 chairs in the hospital cafeteria.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: