There are 100,000cm in a kilometre so 90,000cm equals 0.9km
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100,000 cm = 1 km so 679,000 cm = 6.79 km = 7 km
90 mph = 144.8 kph (rounded)
"percent" means "out of 100" → 8% = 8/100 let the distance be d, then: 8/100 × d = 90 km → d = 90 km ÷ 8/100 = 90 km × 100/8 = 1125 km
9000 cm = 9000/100 = 90 meters 90 meters is 90/1000 = 9/100 km = 0.09 km which is much smaller than 2 km
The average speed of the bus would be 90 km/h (450 km divided by 5 hours).