Question 1131901
Let {{{ t[1] }}} = the time in hrs from the
time the cattle train left until the  passenger
train departed
{{{ 40*8 = 320 }}} mi is the distance the passenger
train travels until it catches the cattle train
Start a stopwatch when the passenger train leaves
----------------------------------------------------------
Equation for the cattle train:
{{{ 320 - 32t[1] = 32*8 }}}
{{{ 32t[1] = 320 - 256 }}}
{{{32 t[1] = 64 }}}
{{{ t[1] = 2 }}} hrs
----------------------------
check answer:
{{{ 320 - 64 = 256 }}}
{{{ 256/32 = 8 }}}
{{{ 320/( 8 + 2 ) = 32 }}} mi/hr
OK