I start from a playground and travel to school. Its distance from the school at any time is given by 80−4t km (where \t is the time in minutes since I left the playground). I pass my friend's house on the way (30 km from the school). How far is my friend's house from the playground?
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Answer:
50 km far is my friend house from the playground
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46t km
difference of 80-4t =76
and again do 76 - 30
=46t km
I THINK
sry if its wrong
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