**Question:**

A young man invited a large number of friends to his wedding. To one hundred, he mailed invitations each costing 15 ps. To the remaining he sent invitations by Inland letters each costing 35 paise, and envelopes costing 55 paise each, in the ratio of 3:7. His total postal expenditure came to Rs. 113. Find the number of friends invited.

**Option A):**

300**Option B):**

280**Option C):**

320**Option D):**

250

**Correct Answer is Option A):**

300