Question

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

Answer 1

About 191 people

Explanation:

Given:

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

There are 700 people on the subway.

Question asked:

About how many people do not have a briefcase ?

Solution:

By applying unitary method:

Out of 11 people, number of people having briefcase = 8

Out of 1 , number of people having briefcase =
`(8)/(11)`

Out of 700 people, number of people having briefcase =
`(8)/(11) *700\\`

=
`(5600)/(11)`

Number of people not having briefcase =
`700 -`
`(5600)/(11)`

=
`(7700-5600)/(11)`

=
`(2100)/(11)` =
`190.90`

Therefore, about 191 people do not have a briefcase on the subway.