3 years ago

How man y kilometers traveled by bike ?

1 answer:

3 0

Total was 200
x+y=200
biking was 40 mor than bus
x=40+y
subsitute 40+y for x in other equation

x+y=200
40+y+y=200
40+2y=200
minus 40 both sides
2y=160
divide both sides by 2
y=80

sub back
x=40+y
x=40+80
x=120

120km biked
80km on bus

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