Explanation
We look at this question and we see algebra. This is a
classic word problem in which algebraic statements have been expressed in
English. Most likely, we will use the n variables,
n equations here. I.e., we are
missing the number of mackerels and the number of tuna. If we can form two
distinct equations with those variables, we'll be able to solve for both
variables. On to the statements, which we'll look at separately. The first
statement gives
Which is a good equation, but we only have one total. So
the first statement is insufficient. The second statement gives me
Which logically has the same problem--we
have only one equation, total. However, if we combine the statements, we
have two equations for two variables, so the n variables, n equations
rule is satisfied, and we'll be able to solve for both T and M. So the
statements are sufficient together. In practice this can all be done without
writing the equations, so long as you are certain that the equations are
distinct and they are linear equations.
The correct answer is (C).
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