Discussion
The parcel sending rates are given below
Parcel weighing (50 grams or less) : ₹ 15.00 parcel weighing (for every additional 50 grams) : ₹ 7.00
Meena wants to send a parcel to her friend Charu in Delhi. The parcel weighs 350 g. Look at the charges and select the correct cost of sending the parcel :
Answer: D
The cost is ₹ 57.
The first 50 g cost ₹ 15. The remaining 300 g make six further blocks of 50 g at ₹ 7 each:
\[ \begin{aligned} 350 - 50 &= 300\ \text{g} = 6 \times 50\ \text{g} \\ 15 + 6 \times 7 &= 15 + 42 = 57 \end{aligned} \]
₹ 42 is the additional charge alone, forgetting the first ₹ 15, and ₹ 50 counts only five additional blocks of 50 g.
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