**Question:**

Suppose a worker earned Rs. 20 on one day and spent Rs. 15 on the next day. He again earned Rs. 20 on the third day and spent Rs. 15 on the fourth day and so on. On which day, will he first have Rs. 60 with him?

**Option A):**

20th**Option B):**

24th**Option C):**

30th**Option D):**

17th

**Correct Answer is Option D):**

17th