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Shashwatkhandalkar
A=x km/hr b=y km/hr from first condition 8x=8y+80 8x-8y=80 dividing eq by 8 x+y=10 from second condition x+y=80 adding both x+y=10 x+y=80 2x+0=90 2x=90 x=45 putting value 45-y=10 45-10=y y=35 speed of car A is 45km/hr speed of car B is 35km/hr
Answers & Comments
b=y km/hr
from first condition
8x=8y+80
8x-8y=80
dividing eq by 8
x+y=10
from second condition
x+y=80
adding both
x+y=10
x+y=80
2x+0=90
2x=90
x=45
putting value
45-y=10
45-10=y
y=35
speed of car A is 45km/hr
speed of car B is 35km/hr