A person on tour has Rs. 4200 for his expenses. If he extends his tour for 3 days, he has to cut down his daily expenses by Rs. 70. Find the original duration of the tour.
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Solution
Let the original duration of the tour be x days. Then, the increased duration of the tour is (x+3) days.
Daily expenses when the tour is of x days = 4200x
Daily expenses when the tour is of (x+3) days = 4200x+3