Key pointsEach cars sold at either $20,000 or $30,000.

Total cars the dealer sells 50.

To find- total profit

Revenue from the cars sold at $20,000 + Revenue from the cars sold at $30,000.

St-1: 20 cars were sold for $20,000Good that 20 cars were sold at $20,000 but isn't $20,000 suppose to be a 20% or 30% marked up price of the cost price. And what is that cost price?? Cant find. And,therefore,

Not sufficient!!St-2: 30 cars were marked up 30%It states that 30 cars were marked up 30%. That means the remaining 20 were marked at 20% of the cost price. But again, What is the cost price of the two batches of the cars sold?

Data not sufficientCombining statement 1 and 2, we get that20 cars were sold at $20,000 and that 30 cars were marked up 30% or the remaining 20 were marked at 20% of the cost price.

let CPx - cost price of 20 cars

and CPy - cost price of 30 cars

now cost price of 1 car of 20 cars= 1.2*x=20000.

= x= 20000/1.2=5000/3

Therefore, 20 cars = (5000/3)*20= some value

SPx(selling price of 20 cars

)= 20*20000= 400000

profit from batch of 20 cars= 400000-[20*(5000/30] = some value

Similarly , for another batch of 30 cars profits can be known

Therefore combining gives a sufficient solution.

Please correct me if E is the correct option.