You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

[EX Q]: Question: A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

Option A: 35%

Option B: 37.5%

Option C: 45%

Option D: 47.5%

Option E: 50%
[EX A]: Option E

[EX Q]: Question: Lagaan is levied on the 60 percent of the cultivated land. The revenue department collected total Rs. 3,44,000 through the lagaan from the village of Mutter. Mutter, a very rich farmer , paid only Rs.480 as lagaan. The percentage of total land of Mutter over the total taxable land of the village is:

Option A: 0.23255

Option B: 0.14544

Option C: 0.25632

Option D: 0.35466

Option E: 0.63435
[EX A]: Option A

[EX Q]: Question: Because he's taxed by his home planet, Mork pays a tax rate of 40% on his income, while Mindy pays a rate of only 30% on hers. If Mindy earned 3 times as much as Mork did, what was their combined tax rate?

Option A: 32.5%

Option B: 34%

Option C: 35%

Option D: 36%

Option E: 37.5%
[EX A]:
Option A