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Question
An auto rickshaw charges Rs 10 for the first kilometre then Rs 8 for each such subsequent kilometre. The total charge (in Rs) for d kilometres is ______.
Solution
An auto rickshaw charges Rs 10 for the first kilometre then Rs 8 for each such subsequent kilometre. The total charge (in Rs) for d kilometres is 2 + 8d.
Explanation:
For the first kilometre, rickshaw charges = Rs. 10.
And the charges for subsequent kilometre = Rs. 8.
∴ The charges for d kilometres
= 10 + (d – 1)8
= 10 + 8d – 8
= 2 + 8d
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