Answer :
J = F - 2 1/0
where J is Joey's time and F is Frank's time
J = 8 3/5 - 2 1/10
J = 6 1/2 0r 6.5
where J is Joey's time and F is Frank's time
J = 8 3/5 - 2 1/10
J = 6 1/2 0r 6.5