If 'A' denotes '+', 'B' denotes '×', 'C' denotes '–' and 'D' denotes '÷', then what will come in place of '?' in the following equation? 18 A 23 C 6 B (96 D 16) A 3 B 12 = ?

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?