Question 57268
Hello,

Call t the time to get there, and T the time to return. Call 2x the total distance (x is the distance to disneyland) Then we have:

50t + 40T = 2x
t + T = 7,2

=> fill in (7,2 - t) for T

50t + 40(7,2 - t) = 2x

Use this together with 50t = x  (going to disneyland without returning)

Now you have: 50t + 288 - 40t = 100t

288 = 90t

t = 288/90 = 3.2

=> x = 50*3.2 = 160   ...without guessing ;-)


Greets,
Scriptor