Ukubala noma yiliphi iphesenti ngokushesha
Amaphesenti avela yonke indawo: itiphu ephasini lasezantsi lebhili yasesitolo sokudlela, isitika sokwehla kwenani esibomvu efasiteleni lesitolo, intela yokuthengisa eyengezwa etilini, ukwenyuka kweholo umqashi wakho asanda kukuthembisa kona, amamaki esivivinyo. Leli gama libukeka lisobuchwepheshe, kodwa iphesenti liyingxenye nje enomholo ongaphansi omile ku-100. Uma usuwazi ukuthi yimuphi kwemibuzo emine elula oyibuzayo, yonke inkinga yephesenti iba yisibalo esisodwa esilula. Leli khasi lihamba nale mibuzo emine ngezibonelo zangempela, zansuku zonke, futhi i-calculator engenhla ikubalela isibalo ngokushesha.
Ini u-X% ka-Y?
Lo ngumbuzo owubuzayo uma usazi izinga futhi ufuna isamba. Ifomula ilula: guqula iphesenti libe yisamba ngokwesigaba ngokulihlukanisa ngo-100, bese uphindaphinda ngenombolo yakho konke.
X% ka-Y = (X ÷ 100) × Y
Isibonelo sangempela (itiphu): idina lakho lifike ku-$60 futhi ufuna ukushiya itiphu engu-18%. Lokho kungu-(18 ÷ 100) × 60 = 0.18 × 60 = $10.80. Yengeze kubhili bese ukhokha u-$70.80. Isimo esifanayo sesibalo siphendula "yini intela yokuthengisa engu-8% kujakhethi lika-$45?" — 0.08 × 45 = $3.60, ngakho ijakhethi libiza u-$48.60 ekhesheni.
U-X uyiphesenti elingakanani ka-Y?
Lapha unamasamba amabili futhi ufuna ukwazi ukuthi aqhathaniseka kanjani njengephesenti. Hlukanisa ingxenye ngakho konke bese uphindaphinda ngo-100.
Iphesenti = (X ÷ Y) × 100
Isibonelo sangempela (imaki): uthole amamaki angu-42 kwangu-50 esivivinyweni. Lokho kungu-(42 ÷ 50) × 100 = 0.84 × 100 = 84%. Indlela efanayo ikutshela ukuthi uma usugcine u-$1,500 kuya kuholide engu-$6,000, usuku-(1500 ÷ 6000) × 100 = 25% yendlela.
Ukwenyuka kwephesenti
Uma inombolo ikhula futhi ufuna ukuyibeka njengephesenti, bala umehluko kuqala, bese uwuhlukanisa ngenani lasekuqaleni. Inombolo yokuqala ihlala ingaphansi njalo — leyo iwuphutha oluvame kunazo zonke abantu abaluenzayo.
Iphesenti yokwenyuka = ((Elisha − Elidala) ÷ Elidala) × 100
Isibonelo sangempela (ukwenyuka kwenani): ipasi yokugibela yenyanga isuke ku-$80 yaya ku-$92. Umehluko ungu-$12, ngakho ((92 − 80) ÷ 80) × 100 = (12 ÷ 80) × 100 = 15%. Ukuya kwakho emsebenzini kusheshe kwaba yimali eningi ngo-15%. Ifomula efanayo ibhekana nokwenyuka kweholo: iholo elisuke ku-$50,000 laya ku-$54,000 lingu-(4000 ÷ 50000) × 100 = 8% yokwenyuka.
Ukwehla kwephesenti
Ukwehla kusebenzisa ubuchule obufanayo ngqo — umehluko uphuma ungangaphansi, okusho nje ukwehla.
Iphesenti yokwehla = ((Elidala − Elisha) ÷ Elidala) × 100
Isibonelo sangempela (ukwehla kwentengo): izicathulo ezingu-$120 zehle zaya ku-$90. Ukwehla kungu-$30, ngakho (30 ÷ 120) × 100 = 25% yokwehla. Kwelinye icala, uma ubona uphawu olusho "30% off ku-$120," ukonga kungu-0.30 × 120 = $36 futhi ukhokha u-$84.
Umehluko wephesenti (uma kungekho "okuqala")
Kwesinye isikhathi akekho kulezi zinombolo ozisebenzisayo ongathi uyindawo yokuqala — ufuna nje ukwazi ukuthi amanani amabili akude kangakanani. Hlukanisa umehluko ngesilinganiso sazo zombili izinombolo.
Umehluko wephesenti = (|A − B| ÷ ((A + B) ÷ 2)) × 100
Isibonelo sangempela: esinye isitolo sithengisa igedlela ngo-$40 kanti esinye ngo-$50. Igebe lingu-$10 futhi isilinganiso singu-$45, ngakho (10 ÷ 45) × 100 ≈ 22%. Qaphela ukuthi lokhu kulinganile: akubalulekile ukuthi iyiphi intengo oyibiza ngo-A futhi eyiphi ngo-B.
Amaqhinga amabili asheshayo okubala ngengqondo
Shintshanisa izinombolo. U-X% ka-Y uhlala elingana no-Y% ka-X. Ukubala u-16% ka-25 kubukeka kunzima, kodwa u-25% ka-16 kuyingxenye nje eyodwa kwezine ku-16 — okungu-4. Impendulo efanayo, umzamo omncane kakhulu.
Yakha kusuka ku-10% no-1%. Ukuthola u-10% wanoma iyiphi inombolo, hudula ikoma indawo eyodwa ngakwesobunxele: u-10% ka-240 ungu-24. Ukuthola u-1%, hudula izindawo ezimbili: u-1% ka-240 ungu-2.40. Kulezi zinsika ezimbili ungakwazi ukwakha cishe noma yini — u-15% ungu-10% wengezwe ngengxenye yawo (24 + 12 = 36), futhi u-17% ungu-10% + 5% + 2% (24 + 12 + 4.80 = 40.80). Yile ndlela ngempela obala ngayo itiphu ngengqondo yakho ngenkathi iweyita elinde.
Ekukhuleni kwesikhathi eside lapho unyaka ngamunye wakhelwa phezu kolwangaphambili, amaphesenti ayahlangana hhayi nje engeza — zama i-calculator yozuzo oluhlanganisiwe. Ungabuye uhlole yonke i-amacalculator mahhala okuhlukanisa amabhili, ukuguqula amayunithi nokunye.
Imibuzo evame ukubuzwa
Ngibala kanjani iphesenti lenombolo?
Hlukanisa iphesenti ngo-100 ukuze uthole isamba, bese uphindaphinda ngenombolo. Ku-20% ka-150, bala u-0.20 uphindwe ngo-150, okulingana no-30.
Ngithola kanjani ukuthi enye inombolo iyiphesenti elingakanani lenye?
Hlukanisa ingxenye ngakho konke bese uphindaphinda ngo-100. Uma imibuzo engu-42 kwangu-50 iyiqiniso, lokho ku-42 kuhlukaniswe ngo-50 kuphindwe ngo-100, okulingana no-84 phesenti.
Iyiphi ifomula yoshintsho lwephesenti?
Susa inani elidala kwelisha, hlukanisa ngenani elidala, bese uphindaphinda ngo-100. Ukwenyuka kusuka ku-80 kuya ku-92 kungu-12 kuhlukaniswe ngo-80 kuphindwe ngo-100, okulingana nokwenyuka ngo-15 phesenti. Impendulo engaphansi isho ukwehla.
Kungani ngihlukanisa ngenombolo yokuqala eshintshweni lwephesenti?
Ngoba ushintsho lulinganiswa ngokusekelwe endaweni oqale kuyo. Ukuhlukanisa ngenani elisha kunalokho kunikeza inani elihlukile futhi elikhohlisayo, ngakho inani lokuqala (elokuqala) lihlala ngaphansi njalo.
Yini umehluko phakathi koshintsho lwephesenti nomehluko wephesenti?
Ushintsho lwephesenti lunokuqala nokugcina okucacile, ngakho luhlukanisa ngenani lokuqala. Umehluko wephesenti uqhathanisa amanani amabili ngaphandle kwendawo yokuqala, ngakho uhlukanisa ngesilinganiso sawo futhi ufana kungakhathaliseki ukuthi uwabeka kuliphi icala.
Ingabe u-X phesenti ka-Y ufana no-Y phesenti ka-X?
Yebo, bahlala belingana. U-8 phesenti ka-50 no-50 phesenti ka-8 bobabili balingana no-4. Ukushintshanisa izinombolo kuvame ukwenza isibalo sibe lula kakhulu ukusibala ngengqondo.