Question

In a certain town there were 62 robberies last year. This year the number of robberies has gone down 15%. How many robberies were there this year, to the nearest whole number?

Answer 1

53 robberies

Explanation:

Number of robberies took place last year = 62

Percentage decrease in number of robberies = 15%

So,

Number of robberies took place this year = Number of robberies took place last year -
`(15)/(100)` (Number of robberies took place last year)

=
`62-(15)/(100)(62)`

=
`62(1-(15)/(100))`

=
`62((85)/(100))`

=
`(5270)/(100)`

=
`52.7`

≈ 53 robberies