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Study the graph drawn below and answer the questions that follow.
If all ordinary post letters are posted with Re.1 per letter, what is the total cost on ordinary post over the period shown?

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Rs. 3417

Rs. 3467

Rs. 3267

Rs. 3217

answer is D.

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Detailed Solution

$\begin{array}{l} 223 + 280 + 1914 + 310 + 239 + 251 = 3217 \\ E a c h l e t t e r R s .1 = 3217 \times 1 = R s . 3217 \end{array}$

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