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Question

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

According to the question,

4200x4200x+3=70

4200(x+3)4200xx(x+3)=70

60×3x2+3x=1

180=x2+3x

x2+3x180=0

(x+15)(x12)=0

x=12

Therefore, original duration of tour =12 days.

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