algebra
A boy walked for 4 hours and cycled for 3 hours,covering a total distance of 74 kilometers,later he walked for 2 hours and cycled for 4 hours ,covering 82 kilometers,what were his average speed of walking and his average speed of cycling if his speed was constant in the two ca...
physics
008
Economics
Haha, I'm stuck on this one too.
acids and alkalis
thanx you helped me
acids and alkalis
thanx you helped me
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