a) The total number of vehicles is 2450, and the number of vehicles that didn't use a toll pass is 1566, so the probability is:
b) If it's given that the vehicle is a truck, the number of trucks is 951, and the number of trucks that didn't use a toll pass is 610, so the probability is:
Explanation:
To mark 2/5; move two parts on the right-side of zero. To mark 11/5; move eleven parts on the right-side of zero. To mark -8/5; move eight parts on the left-side of zero. To mark -3/5; move three parts on the left-side of zero.
This statement can be represented as 
, since the quotient is the answer to a division problem.
Divide. 
Multiply. 
Simplify. When the numerator and denominator are the same, the fraction is equal to 1. 
You didn’t attach the picture try reposting your question. :)
Let x be the first number
X + 1 be the second number
So
(x+1)^2 – x^2 = 2017
X^2 + 2x +1 – x^2 = 2017
2x + 1 = 2017
2x = 2017 – 1
2x = 2016
X = 1008
X + 1 = 1009
Sum = 1008 + 1009 = 2017
