A car dealership has 40 cars on the lot, 15% of which are silver. If the dealership receives a new shipment of 80 cars, 45% of which are not silver, what percentage of total number of cars are silver?  Choose the correct choice from the following.
A) 30% B) 35% C) 40% D) 45% E) 50%
The number of silver cars is 0.15*40 + 0.45*80= 
<gadget id="calculator">0.15*40 + 0.45*80</gadget>
<output>42</output>
42   The percentage of cars which are silver is 42/120= 35%   The answer is 35%.
<result>B</result>
A car dealership has 40 cars on the lot, 15% of which are silver. If the dealership receives a new shipment of 80 cars, 45% of which are not silver, what percentage of total number of cars are silver?