well, we're assuming all along that Merina owes Bradford $2000, because in the 1st scenario, she was going to pay twice $1000.
on the 2nd scenario, she'll be paying the same $2000 but split 7 months from now and then 7 months later, same 2000 bucks, at which point Bradford applied 8.5% interest.
using those assumptions, since the wording is not quite clear, we can say that Merina is simply paying 2000 bucks plus the 8.5%
Write the equation of the first train: x = 12t Write the equation of the second train: y = -20t+72, assuming the train one is at the origins when t = 0. Now solve the equation: 12t=-20t+72, 32t = 72, then t = 2.25 hours. The two train meet after 2.25 hours. Now the equation of the <span>pigeon is like this: x = 48t. </span>Then for t = 2.25, we get
<span>The Hyde has flown 108 km when the trains meet.</span>