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This is the problem...

:/

exactly, suzi... but isn't 42=(travel time from a to b)+ staying time+(ravel time from b to a)

so to solve X,
(x/60) + (x/40) = 17
I would have to multiply 60 by each side, correct? and solve?

better multiply both sides with 120... its a multiple of both 40 & 60...

Are you able to show me the steps?

try your hand... if its difficult, i'll help...

17*120 = 2040.. right? then does that make the x/60 + x/40 = to x? since it all cancels out?

after multiplying with 120:
2x+3x=17*120
5x=17*120
x=17*120/5

you don't need to find 17*120 outrightly...
120/5=24

so how did you get 3 and 2?

2x + 3x

Thanks a lot annand! <3

\[120*\left( x/60+x/40 \right)=(120*x/60)+(120*x/40)=2x+3x\]

:-)