On a subway 8 out of 11 people are carrying a briefcase. Based on this information, if there are 700 people on the subway, then about how many people do not have a briefcase?

191 people do not have a briefcase.

Step-by-step explanation:

Given:

On a subway 8 out of 11 people are carrying a briefcase.

If there are 700 people on the subway.

Now, find the people do not have a briefcase.

As given, 8 out of 11 are carrying a briefcase.

So, if there are 700 people on the subway.

Using the above information we need to get the number of people carrying briefcase.

Let the number of people carrying briefcase be

So, 8 is equivalent to 11.

And, is equivalent to 700.

Now, to solve by using cross multiplication method:

By cross multiplying we get:

Dividing both sides by 11 we get:

Approximately,

Thus, 509 out of 700 people are carrying briefcase.

Now, to get the people not carrying briefcase we subtract 509 from 700:

Therefore, 191 people do not have a briefcase.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x