Shaina pays ₹ 15000 as rent for 3 months. How much does she has to pay for a whole year, if the rent per month remains same?

Rent paid by Shaina for 3 months= ₹ 15000

Rent paid by Shaina for 1 month = 15000 / 3 = ₹ 5000

Rent paid by Shaina for a whole year = $5000 \times 12 = 60000$

Therefore, 

Rent paid by Shaina for a whole year = ₹ 60,000