In a certain town there were 147 robberies last year. This year the number of robberies has gone down 31%. How many robberies were there this year, to the nearest whole number?

≈101

Step-by-step explanation:

Let x and y represent the number of robberies in last year and this year respectively.

Given;

x = 147

This year the number of robberies has gone down 31%.

So;

y = x - 31% of x

y = x - 0.31x

y = 0.69x

Substituting the value;

y = 0.69 × 147

y = 101.43

y ≈ 101. (to the nearest whole number)

The number of robberies this year = 101

its the fourth option