Question

if 60 people were asked their favorite color how many people preferred blue when 26% were red ,16%green,30%blue,4%black and 24%yellow

Answer 1

An easy trick is to just take 10% first by moving the decimal place to the left one, like this. 10% of 60.0 is 6.0. Then multiply that by 3 to get 30% so 6*3= 18 people.