How to calculate this?

 Dear All,

Plz. look into the matter.

Suppose We r running a institute. Part time professional course. duration 1 year. ok

Fee plan are = one time plan having amount of rs. 50,000/-

Installment plan= 10000/- at the time of Admission 

Five equal monthly installments of Rs. 8000/-

Suppose we got five admission in april month with Rs. 50,000/- ie: april income was rs. 50000/-

then, 10000*5= 50000/- rs. installment received in May month similarly 50,000/- in june.

So, how to show these entries in books and what will be the entries???????