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If P = (x, y), F1 = (3, 0), F2 = (-3, 0) and 16x2 + 25y2 = 400, then PF1 + PF2 equals

(a) 8

(b) 6

(c) 10

(d) 12

1 Answer

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Best answer

Correct option: (c) 10

Explanation:

Given 16x2 + 25y2 = 400

Therefore, (c) is the answer.

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