Question

In a newspaper, it was reported that yearly robberies in Springfield were up 25% to 215 in 2012 from 2011. How many robberies were there in Springfield in 2011?

Answer 1

Answer:

172 robberies in 2011

Step-by-step explanation:

let's Marked robberies in 2011 with

x which is worth 100%

215 robberies in 2012 worth 100% + 25% = 125%.

Now we will make proportions

x:215= 100:25

When we multiply external and internal member we get

=> 125x = 215×100

=> 125x = 21500

=> x = 21500/125

=> x = 172 robberies in2011