Friends wants to buy a refrigerator for ksh 50000 on hire purchase. They pay a deposit of Ksh12000 and agree to pay off the remaining balance in 20 monthly installment of ksh 2000 each. How much will they end up paying for the refrigerator in total?

Bei ya kawaida ya friji = Ksh 50,000 (hii ni bei ya kawaida, si lazima kuitumia moja kwa moja kwenye fomula ya HP)
Malipo ya awali ($D$) = Ksh 12,000
Idadi ya awamu za kila mwezi ($M$) = 20
Kiasi cha awamu ya kila mwezi ($I$) = Ksh 2,000

Kwanza, hesabu jumla ya malipo ya awamu:

Sasa, ongeza malipo ya awali:

Jumla ya kiasi kitakacholipwa kwa friji kwa masharti ya ununuzi wa kukodisha ni Ksh 52,000.