Question

Cost of 30 envelopes is rupees 90. A)Find cost of 10 envelopes. B)How many envalopes can be bought for Rupees 30.

Answer 1

Dear Student,
A) $$\begin{gathered} Costof30Envelopes=Rs.90 \\ Costof1Envelope=Rs.\frac{90}{30}=Rs.3 \\ \Rightarrow Costof10Envelopes=Rs.3\times 10=Rs.30 \end{gathered}$$
B) So, 10 Envelopes can be bought for Rs. 30
Regards