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Q.

An auto rickshaw charges Rs 10 for the first km then Rs 8 for each such subsequent km. The total charge (in Rs) for d km is ____.


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Detailed Solution

An auto rickshaw charges Rs 10 for the first km then Rs 8 for each such subsequent km. The total charge (in Rs) for d km is 2+3d.
Given that for the first km, rickshaw charges = Rs 10 and then Rs 8 for each such subsequent km.
Total distance covered by auto rickshaw is d km.
So,
The total charge (in Rs) for d km =10+(d–1)8
= 10 + 8d – 8
= 2 + 8d
The total charge (in Rs) for d km is 2 + 8d.
 
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