In a certain commercial bank, customers may withdraw cash through one of the two tellers at th counter. On average, teller 1 takes 3 minutes while teller 2 takes 5 minutes to serve a customer
If the two tellers start to serve customers at the same time, find the shortest time it takes to serve
100 customers.
(3 marks)
the foot of a vertical pole observes the top of the pole at an
ound towards the