The population of a town increased by 15% in 2016, and decreased by 5% in 2017. if the population of the town was 60,000 in the beginning of 2016, then what was it at the end of 2017?

 The population at the end  of 2017 is 65,550

Step-by-step explanation:

 step 1; find the  population   at the end  of 2016

if 60,000   increases by 15% therefore final % = 100 +15 =115%

Therefore  60,000   = 100%

                         ?      =    115%

by cross multiplication

={ (115 % x 60,000) /100}  =69,000

Step 2:  find the population at the end  of 2017  

if  69,000   decrease by 5% therefore the final% = 100 -5 =95%

Therefore 69000  = 100%

           ?    =  95%

by cross multiplication

= 69000 x 95/100 = 65,550

452,489 to the nearest thousand is 452,000

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: