This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Answer
22 km
Huu hapa ni ufumbuzi wa swali lako:
a) Kokotoa: i) Umbali uliosafiriwa siku ya 10.
Step 1: Tambua mfululizo wa hesabu. Kutokana na maelezo, Soi aliendesha baiskeli 40km siku ya kwanza. Kisha, aliendesha 2km pungufu kila siku inayofuata. Hii inaunda mfululizo wa hesabu (arithmetic progression) ambapo: Neno la kwanza () = 40 km Tofauti ya kawaida () = -2 km (kwa sababu umbali unapungua) Fomula ya neno la katika mfululizo wa hesabu ni .
Step 2: Kokotoa umbali uliosafiriwa siku ya 10. Tumia katika fomula: Umbali uliosafiriwa siku ya 10 ni .
ii) Umbali uliosafiriwa siku ya 16.
Step 1: Tumia fomula ya neno la katika mfululizo wa hesabu. Kama ilivyo hapo juu, km na km.
Step 2: Kokotoa umbali uliosafiriwa siku ya 16. Tumia katika fomula: Umbali uliosafiriwa siku ya 16 ni .
b) Ikiwa Soi alikusanya Ksh 200 kwa kila Km, kokotoa jumla ya pesa zilizokusanywa.
Step 1: Tambua idadi kamili ya siku za kuendesha baiskeli. Soi ataendelea kuendesha baiskeli hadi umbali uwe 0 au chini. Tutapata wakati . Kwa hivyo, Soi aliendesha baiskeli kwa siku 21.
Step 2: Kokotoa jumla ya umbali uliosafiriwa kwa siku zote. Jumla ya mfululizo wa hesabu ni . Hapa, , , na (umbali siku ya 21).
Step 3: Kokotoa jumla ya pesa zilizokusanywa. Kiwango cha kukusanya pesa ni Ksh 200 kwa kila Km. Jumla ya pesa zilizokusanywa ni .
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Huu hapa ni ufumbuzi wa swali lako: a) Kokotoa: i) Umbali uliosafiriwa siku ya 10.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.