A tourist spends daily as many rupees as the number of days of his total tour. If his total expenses were ₹ 361, then how many days did his tour last ?
17 days
19 days
21 days
31 days
Correct Option: B
Let the number of days of tour be x. ∴ Total expenditure = x2 ∴ x2 = 361 ⇒ x = √361 = 19
