This is tough. Have fun
$1600 ?
time difference from the first to the second therm is 1/2t 2tx80+500=tx40+1100 120t=600 t=600/120=5 5x40+1100=1300 5x80=400
Marissa had $1300 and Janice $400
$1600 ?
time difference from the first to the second therm is 1/2t
2tx80+500=tx40+1100
120t=600
t=600/120=5
5x40+1100=1300
5x80=400
Marissa had $1300 and Janice $400