₹ 6,500 were divided equally among a certain number of persons. Had there been 15 more persons, each would have got ₹ 30 less. Find the original numberof persons.
Let the number of persons be N.
$$\frac{6500}{N}-30=\frac{6500}{N+15}$$
One can either solve the equation by theoretical approach or one can substitute N with given options.
N = 50 gives the answer.
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