Zoo Siab
Cov feem pua yog txoj hauv kev los sawv cev rau ib feem uas tag nrho tau muab faib ua ib puas feem. Piv txwv, hais tias ib yam khoom muaj 30% rog, txhais tau tias yog peb faib nws ua 100 feem, 30 ntawm lawv yuav rog.
Cov % cim Nws yog qhov sib npaug hauv kev ua lej rau qhov tseeb 0.01 uas yog hais tias 1% sib npaug rau 0.01.
A feem yog kev sib raug zoo ntawm ob qhov ntau. Qhov feem pua tso cai rau koj los sib piv cov nyiaj sib txawv nrog kev hwm rau tag nrho.
Txhawm rau nrhiav qhov feem pua ntawm tag nrho (Y) uas muaj pes tsawg X sawv cev, peb yuav tsum faib X los ntawm Y, thiab tom qab ntawd muab nws suav nrog 100.
Piv txwv li, yog tias tag nrho cov zaub mov yog 40 grams thiab nws muaj 15 grams roj:
- 15/40 x 100 = 37.5%. Ntawd yog, cov zaub mov muaj 37.5% rog.
Txhawm rau nrhiav seb qhov pes tsawg tiag tiag sawv cev rau feem pua P ntawm tag nrho Y, muab P los ntawm tag nrho Y, thiab tom qab ntawd faib nws los ntawm 100. Piv txwv li, yog tias koj xav paub ntau npaum li cas 30% ntawm 120 yog:
30 x 120/100 = 36. Ntawd yog, 30% ntawm 120 yog 36.
Feem pua siab yuav qhia tau tias me me npaum li cas. Piv txwv li, yog tias 90% ntawm ib diav yog qab zib, nws tsuas yog 1.8 grams qab zib. Thaum 15% ntawm pob ntawv qab zib tuaj yeem yog 150 grams. Yog li, txhawm rau paub qhov ntau npaum li cas nws yog qhov tsim nyog yuav tsum paub nrog rau qhov suav tag nrho qhov feem pua tau ntsuas.
Tej zaum nws yuav pab tau koj: Tus cim% yog dab tsi thiab nws nyeem li cas?
Piv txwv ntawm feem pua
- Ib feem ntawm 1/1 yog 100%
- Ib feem ntawm 9/10 yog 90%
- Ib feem ntawm 4/5 yog 80%
- Ib feem ntawm ¾ yog 75%
- Ib feem ntawm 7/10 yog 70%
- Ib feem ntawm 3/5 yog 60%
- Ib feem ntawm 1/2 yog 50%
- Ib feem ntawm 2/5 yog 40%
- Ib feem ntawm 3/10 yog 30%
- Ib feem ntawm 1/4 yog 25%
- Ib feem ntawm 3/20 yog 15%
- Ib feem ntawm 1/8 yog 12.5%
- Ib feem ntawm 1/10 yog 10%
- Ib feem ntawm 1/20 yog 5%
- Ib feem ntawm 1/50 yog 2%
- Ib feem ntawm 1/100 yog 1%
- Ib feem ntawm 1/200 yog 0.5%
- Hauv pab pawg ntawm 30 tus tub ntxhais kawm, 12 yog tub. 12/30 x 100 = 40. Ntawd yog, 40% ntawm cov tub ntxhais kawm yog txiv neej.
- Nqaij nyuj yog 20% rog, thiab 300-gram ua haujlwm tau noj thaum noj mov. 20 x 300/100 = 60. Qhov no txhais tau tias cov zaub mov muaj 60 grams roj.
- Hauv ib lub nroog muaj 1,462 lub tsev, ntawm uas 1,200 txuas nrog lub network roj: 1,200 / 1,462 x 100 = 82.079 Hauv lwm lo lus, 82% ntawm lub tsev txuas nrog lub network roj.
- Lub taub dej uas muaj peev xwm ntawm 80 litres muaj 28 litres. 28/80 x 100 = 35. Qhov no txhais tau tias lub tank puv 35%.
- Hauv vaj botanical, tawm ntawm 230 hom, 140 yog cov hauv paus txawm. 140/230 x 100 = 60.869. Hauv lwm lo lus, 60.8% ntawm cov tsiaj yog autochthonous.
- Ntawm $ 100,000 khoom plig, tus yeej yuav tsum them 20% hauv se. 20 x 100,000 / 100 = 20,000. Hauv lwm lo lus, cov se yog $ 20,000.
- Ib lub ris uas raug nqi 300 pesos muaj qhov txo nqi 25%. 25 x 300/100 = 75. Hauv lwm lo lus, qhov luv nqi yog 75 pesos thiab tus nqi kawg yog 225 pesos.
- 100 grams mov muaj 7 grams ntawm cov protein. Txij li tag nrho yog 100, koj tsis tas yuav ua lej: nplej muaj 7% cov protein.
