An auto dealer sells each car at either $20,000 or $30,000. Some cars

Key points
Each 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 $20,000
Good 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 sufficient

Combining statement 1 and 2, we get that
20 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.