Every Sunday, Giri jogs 3 miles. For the rest of the week, each day he jogs 1 mile more than the previous day. How many miles does giri jog in 2 weeks ?\nOptions:\n(A) 42\n(B) 63\n(C) 84\n(D) 98\n(E) 108
Let’s work this out in a step by step way to be sure we have the right answer.
(C)
In one week, Giri jogs 3 + 4 + 5 + 6 + 7 + 8 + 9 = 42 miles\nIn two weeks, Giri jogs 84 miles.

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Therefore, the answer is (C)