A bus starts running with some initial speed and its speed increases every hour by 9 km/hr. if it takes 11 hours to cover a distance of 572 km, then what was the initial speed (in km/hr) of the bus?
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Let initial speed =x km/hr
As speed increases by 9km/hr every hour thus it forms AP
S11=11/2*(2*x+10*9)=572
2x+90=572*2/11
2x+90=104
x=14/2=7
Hope it helps
If yes please mark brainliest
As speed increases by 9km/hr every hour thus it forms AP
S11=11/2*(2*x+10*9)=572
2x+90=572*2/11
2x+90=104
x=14/2=7
Hope it helps
If yes please mark brainliest
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