How many hours does it take for a car to travel 120 km in 2 hours? How many hours can it take if the speed is increased by 20%?
Required: 360 △ 2 = 6 hours
It takes x hours to set it first
360/x=120/2
x=360÷60
x=6
It will take six hours
If the speed is increased by 20%, use less: 6-6X (1-20%) = 1.2 hours
A car from a to B, 100 kilometers per hour, 72 hours to arrive, the actual three hours of 360 kilometers, according to this calculation, a to B to a few hours
According to this calculation, from a to B: 100x72 △ 360x3 = 60 (hours)
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