a car travels 30 kms in 1 hour and a bus travels 40 kms 2 hours find the ratio of their speed
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First you drive 30 km in 1 hour.
Add 40 km and you get 70 km.
This distance is driven in 1+2 hours= 3 hours. 70 km in 3 hours make: 70/3 = 23 and 1/3 km/hr.
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