A cyclist travels for 60 km at x km/h and
180 km at y km/h and takes 10 hours altogether for the journey. If the speeds are
interchanged, the journey takes 8 hours.
Find x and y.
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Step-by-step explanation:
time= distance/time
60/x + 180/y =10
1/x + 3/y =1/6 ________eq. 1
similarly
3/x + 1/y = 2/15 ________eq. 2
by solving 1 and 2 we get
x= 240/7
y= 240/11
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