Mia bought a laptop for ₹ 21,000 and sold it to her friend at a profit equal to ${\frac{1}{5}}^{\text{th}}$ of the cost price. How much did her friend pay Mia?

Q. Mia sold a ring to her friend for ₹7600 which she had bought from an exhibition for ₹9000. What is the cost price of the ring for her friend?

Q. Vaishali bought a movie ticket for ₹150 and sold it to her friend for ₹225. What is the cost price of the ticket for her friend?

Q. Gita and her friends went shopping. She bought things for Rs 58, Rs 37 and Rs 22. Gita had a hundred-rupee note.
How much money should she borrow from her friends to pay the bill?

Q.

Anita and her friends bought some pens. For a packet of five pens, they got two rupees reduction in price. They had to pay only 18 rupees. Had they bought the pens separately, how much would have been the price for each pen?

Q. Richa's friend wanted to buy a cooler costing ₹ 10000. Richa lent her ₹ 6000 for a month. How much money her friend was having with her?