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Earn +20 ptsQ: 3hr 30min plus 4hr and 30 mins?
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What is 203 km in 4 hours 48 mins in km per hour?
4hr 48min = 4 + 48/60 hrs = 4.8 hrs 203 km in 4hr 48 min => 203 / 4.8 ~= 42.3 km in 1 hour About 42.3 km/h
One pipe can fill a pool in 12 hours while a second pipe can fill the same pool in half the time How long would it take to fill the pool if both pipes are used?
4hr.
Sandy rides his bike to school in 15 minutes. Riding is ten kilometres faster than walkingWhen hel walks it takes 45 minutesHow far away is the school?
The answer is 3.75 km.. Take walking speed as xkm/hr. then x km/hr takes 45 min(3/4 hr) (x+10)km/hr takes 15 min(1/4hr) equating, we get x as 5km/hr. 1 hour by walk he can travel 5 km,, then by walkinfor 45 min he can travel 3.75 km..
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