alisha travels 400 km partly by train and partly by bus.She takes 9 hours,if she travels 120 km by train and remaining by bus.If she travels 160 km vy bus bus and the remaining by train, she takes 1 hour lesser.Find the value of Y,if the difference of speed of bus and train is 10y
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the value of k=is 8
step by step :
let the speed of train =8 km / hour
CASE1: time =9 hr
distance by train =120km
distance by bus =400-120
=200
120÷m+280÷5k=9. equation 1
CASE 2: time =8hr
distance by bus=150km
distance by train=400-150
=250
150÷5k+250÷m=8. equation 2
equation 1×250-equation 2×120
280×250÷5k-150×120÷5k=9*250-8*120
14000÷k-3600÷k=1290
ans ,k=8.06
thank u and voot for this ans mark as brainlist
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