A car from a to B, 45 kilometers per hour, 65 hours to reach. If the speed is increased by 20%, how many hours to reach?

A car from a to B, 45 kilometers per hour, 65 hours to reach. If the speed is increased by 20%, how many hours to reach?

45 × 65 ^ [45 × (1 + 20%)], = 45 × 65 ^ [45 × 1.2], = 45 × 65 ^ 54, = 1 (hour); answer: you can get there in 1 hour

A car from a to B, 45 kilometers per hour, 65 hours to reach. If the speed is increased by 20%, how many hours to reach?

45 × 65 ^ [45 × (1 + 20%)], = 45 × 65 ^ [45 × 1.2], = 45 × 65 ^ 54, = 1 (hour); answer: you can get there in 1 hour

A car from a to B, 45 kilometers per hour, 5 / 6 hours to arrive. If you increase the speed by 20%, how many hours can you arrive?

Solution: distance = speed x time = 45x5 / 6 = 37.5km
Speed increased by 20% = 45x (1 + 0.2) = 54 km / h
Time = distance / speed = 37.5 △ 54 = 0.7 hours (about)
Hope to help you.