 <translate> Bari p ya zama farashin cikakken alkalami. Mun san cewa an sayar da alkalami 10 na farko a farashin yau da kullum, don haka suna biyan 10 * p. Mun kuma san duk wani alkalami da aka saya bayan na farko 10 ne rabin farashin, don haka suka kudin (20 alkalami - 10 alkalami) * p / 2 a kan waɗanda. Idan muka ƙara farashin na farko 10 alkalami da alkalami sayar a rabin farashin shi daidai da jimlar sayan farashin $ 30 = 10 * p + (20 - 10) * p / 2. Saboda haka, $30 = 10 * p + 10 * p / 2. Kuma, $30 = 10 * p + 5 * p. Don haka, $30 = 15 * p. A ƙarshe, p = $2. Saboda haka, amsar ita ce 2. <ibo> Ka p bụrụ ego ole a na-akwụ n'ụkpụrụ pen. Anyị maara na a na-ere mkpịsị 10 mbụ na ọnụahịa nkịtị, yabụ ha na-eri 10 * p. Anyị makwaara na mkpịsị akwụkwọ ọ bụla a zụtara mgbe mbụ 10 bụ ọkara ọnụahịa, yabụ ha na-eri (20 mkpịsị akwụkwọ - 10 mkpịsị akwụkwọ) * p / 2 na ndị. Ọ bụrụ na anyị agbakwunye ọnụahịa nke mkpịsị akwụkwọ 10 mbụ na mkpịsị akwụkwọ ndị e rere na ọkara ọnụahịa, ọ ga-eme ka ọnụahịa ịzụta nke $30 = 10 * p + (20 - 10) * p / 2. N'ihi ya, $30 = 10*p + 10*p/2. Na, $30 = 10 * p + 5 * p. Ya mere, $30 = 15 * p. N'ikpeazụ, p = $2. Ya mere, azịza ya bụ 2. 