Khushi buys 16 oranges for ₹12 each and 10 apples for ₹18 each. She also buys 15 lemons, with each costing ₹5 less than the price of a single apple. If she initially had ₹900, how much money is she left with?

A large ship consumes 0.2 liters of fuel per km, and a smaller ship consumes 0.15 liters per km. If the large ship travels 500 km and the small ship travels 400 km, what is the total fuel cost at a rate of ₹110 per liter?

A hiker climbs 40 meters at the beginning of each hour and rests for the remainder of the hour, during which he slips back 30 meters. If he starts climbing at 9:00 a.m., at what time will he first touch a flag placed 120 meters above the starting ground level?