a container is to hauled the solid waste

from a industrial district of a city of

industries agreed to store their waste

on a large container located at

strategic points due to the size of

container the hauled cointainer tystem

of the collection is to be used.

based on a traffic study $t_1,t_2,$ dl

ane found to be $20,25,8$ minute

respectively $.$ If the round trip hauled

time is $0\mathrm{.}67$ hr $.$ how many container

can be serviced on a collection day of

$8$ hr $.$ assume w$=0\mathrm{.}15,m+u=0\mathrm{.}4h$r per trip, S$=0\mathrm{.}133$ hr per trip.