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Question

In a certain year, California produced 2/7th and Texas produced 1/7th of all the Uranium ore produced in the United States. If all the other states combined produced 28 million tons that year, how many million tons did Texas produce that year?
A. 12
B. 7
C. 14
D. 5
E. 8

Together California and Texas produced 2/7 + 1/7 = 3/7th of all the Uranium ore produced in the country.

Therefore, the other states produced 1 - 3/7 = 4/7th of all the Uranium ore produced in the country.

The combined production of all the other states = 28 million tons.

i.e., 4/7th of total production = 28 million tonnes.
So, total production = (28 * 7)/4 = 49 million tonnes.

Texas produced 1/7th of the total = 1/7 * 49 = 7 million tonnes.

Choice B.