Why did photographers travel with their darkrooms in the 1800's?
(choose all that apply)
O The photograph had to be made and developed while the chemicals w
wet
They sold advertisements on the sides of the big wagons and they mad
their money that way.
It was too dangerous to mix photo chemicals in a downtown building

answer; /// i believe that the correct answer is (b)///they gained vast amounts of

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".