george and carmen went on a bicycle trip. they took a bus to their starting point and then biked the rest. they traveled 350 kilometers in total and they biked 80 kilometers more than they bussed let x= kilometer traveled by biked and y= kilometer traveled by bus Find how many kilometer the traveled by bike?

Question

anonymous · Answer

help me please i dont understand

anonymous · Answer

x = bike
y = bus

x + y = 350
x = y + 80 

y + 80 + y = 350
2y = 350 - 80
2y = 270
y = 135

x + y = 350
x + 135 = 350
x = 350 - 135
x = 215

check..
x = y + 80
215 = 135 + 80
215 = 215 (correct)
check...
x + y = 350
215 + 135 = 350
350 = 350 (correct)

They rode their bikes 215 km,and they rode the bus 135 km.
Any questions ?

anonymous · Answer

thanks i understand now