Re ile ra rutoa ho fumana karolo ea palo sekolong, empa ha nako e ntse e tsamaea, batho ba baholo ba bangata ba na le boiphihlelo bona ba bohlokoa. Leha ho le joalo, ha u leka ho lekanya boholo ba theolelo ka lebenkeleng kapa ho ngola chelete e hlokang ho chechisa toro bakeng sa phomolo, u tla hloka foromo e nepahetseng ea lipalo.
"Nka 'me u etse" ho tla u bontša mekhoa e mengata ea ho bala liperesente tsa chelete e ka sebelisoang maemong a fapaneng.
1. Mokhoa oa ho fumana liperesente tsa
Molao oa mantlha
Haeba u batla ho bala liperesente tsa palo efe kapa efe, o lokela ho sebelisa foromo ea foromo ea P% * X = Y, moo:
- P% ke liperesente;
- X - palo;
- Y - Karabo ea ho qetela.
Mohlala, o hloka ho bala hore na o tla boloka chelete e kae, o reka smartphone e jang $ 250, e nang le theolelo ea 20%.
- Maemong ana, equation e tla ba tjena: 20% * 250 = y.
- Ho hlahisa lipalo tsa lipalo, o hloka ho fetolela 20% ka karolong e ka etsang. Arola nomoro ea 100 le ho tlosa letšoao la liperesente.
- Fetola equation: 0.2 * 250 = Y.
- E bala: 0.2 * 250 = 50. Karabo: Y = 50.
Ho reka li-smartphone tse nang le litheolelo tse 20%, u tla boloka $ 50.
Mokhoa o mong
Ho na le mokhoa o mong oa ho bala liperesente tse ka ba thusang ha u se na sello katlalatso, empa ho ne ho se bonolo ho rarolla equation kelellong. A re re mohlomong u hloka ho tseba hore na ho na le chelete e 25% ea 250 joang.
- Ho etsa sena, o ka fetola linomoro, o lahlela zeros: 2 * 25 = 50.
- Ebe u hloka ho utloisisa hore na u lokela ho etsa eng ka Zeros eo u neng u sa e tsotelle ha lipalo tse ngata. Kahoo, ho araba e ka ba 50; 0.5 kapa 500.
- Linomoro tse 2 tsa ho qetela, e 'ngoe e nyane haholo, e' ngoe e kholo haholo, e 'ngoe e kholo haholo e bapisoa le 250. Ha ho khonehe hore 0,5 le 500 ea karabo: 50.
Haeba u sebetsana le lipalo tse thata haholoanyane, u ka fetola mokhoa ona hanyane. A re re u hloka ho bala 34% ea 45.
- Jala 34% ka 30% le 4%.
- Equation e fumanoa ho joalo: (30% + 4%) * 45.
- Nahana: (30% + 4%) * 45 = 13.5 + 1.8 = 15.3.
Karabo: 15.3. Mohlala o mong o bala 40% ea 154.
- Qala ka ho bolaoa ke ho bolaea 154 ka 150 le 4.
- Kahoo, equation e tla ba ka tsela e latelang: 40% * (150 + 4).
- Li lekanya: 40% * (150 + 4) = 60 + 1 + 1,61.6.
Karabo: 61.6.
2. Tsela ea ho bala hore na palo ea likarolo tse ling e tsoa ho tse ling
Haeba u hloka ho bala, ke karolo efe e itseng ho tloha ka chelete e kholo, u hloka ho sebelisa foromo ea Y / X = P% Foromo. Mohlala, ha re re ka letsatsi la tsoalo la $ 80 e hlahisitsoeng ho uena ka letsatsi la tsoalo ea $ 80 mme joale u batla ho bala liperesente tse hlahisitsoeng.
- Maemong ana, y = 20, x = 80.
- Equation e fumaneha ka tsela e latelang: 20/80 = P%.
- Bala: 20/80 = 0.25.
- Ebe u hloka ho fetola karoloana e entsoeng ke motho ea khahlang. Ho etsa sena, ho eketsa palo e hlahisoang ka 100.
- Kahoo, 0,25 * 100 = 25%. Karabo: 25%.
Kahoo u sebelisitse 25% ea $ 80 e fanoeng.
3. Mokhoa oa ho tseba palo haeba o tseba se lekanang le liperesente tsa eona
Haeba u hloka ho bala palo, nahana ka hore u tseba se lekanang le liperesente tsa y / p%, u tla boloka papatso moo u tla boloka $ 40, seo ke, 20% ea litšenyehelo tsohle tsa leeto la beke, haeba u e ngolla hang-hang. O thahasella ho ithuta litšenyehelo tsohle tsa leeto. Kaha phatlalatso ha e re letho ka sena, u etsa qeto ea ho ba lekanya.
- Maemong ana, Y = 40, P% = 20%, 'me X ha e tsejoe.
- Equation e fumaneha ka tsela e latelang: 40/0% = X.
- Fetolela 20% ka karolong ea Decimel: 20/100 = 0.2.
- Equation e tla tšoana le ena: 40 / 0,2 = x.
- Nahana ka: 40 / 0,2 = 200. Karabo: 200.
Litefiso tsohle tsa leeto ke $ 200.