'Calculate RD & FD Maturity Value'   'NPS Calculator'   'Calculate LTCG on Shares / MF'   'Know Loan Repayment Details'   'Family Pension Calculator'   'Know Week Day You Born'   '11th BPS Expected Basic Pay '   'PPF Investors: इस जानकारी को पढ़े और मित्रों के साथ शेयर करें'   'Crorepati/ELSS/SIP Calculator'   'Download RTGS/NEFT Fillable Form'   'NSE/BSE Index Date wsie'   'PPF Calculator'   'Eligibility to Submit 15G/15H '   'Calculate PPF Withdrawal Amount'   'Fillable Pay In Slip - Auto Amount in Words & Cash Details & '   'Hindi English Translation Practice Exercises'   'SSY Calculator'   'Flexi Fixed Deposit Calculation - Interest/TDS'   'Know Current FY PPF Interest Amount'   'Bankers Expected DA'    'Pensioners Expected DA'   'PPF vs Recurring Deposit'   'Crorepati Calculator'   'Calculate RD/FD Maturity Value'   'Challan 280 (In Fillable Format)'   'Compare Two Loans Interest Payment'   'Letter Writing Helping Sentences'   'English Confusing Words'   'Calculate Your PPF Due Date'   'List of Bank Holidays Statewise'   'Cash Totalling & Tally Cash Position'   'Nifty Bank Date wsie from 15000'   ' PPF Scheme Features'  
Share This Page with Friends / Groups On
View Today - Observances View Today - Observances

Percentage- Facts and Formula

  1. Concept of Percentage : By a certain percent ,we mean that many hundredths. Thus x percent means x hundredths, written as x%.

    To express x% as a fraction : We have , x% = x/100.

    Thus, 20% =20/100 =1/5; 48% =48/100 =12/25, etc.

    To express a/b as a percent : We have, a/b =((a/b)*100)%.

    Thus, ¼ =[(1/4)*100] = 25%; 0.6 =6/10 =3/5 =[(3/5)*100]% =60%.

  2. If the price of a commodity increases by R%, then the reduction in consumption so asnot to increase the expenditure is [R/(100+R))*100]%. If the price of the commodity decreases by R%,then the increase in consumption so as to decrease the expenditure is [(R/(100-R)*100]%.
  3. Results on Population : Let the population of the town be P now and suppose it increases at the rate of R% per annum, then :
    • Population after nyeras = P [1+(R/100)]^n.
    • Population n years ago = P /[1+(R/100)]^n.
  4. Results on Depreciation : Let the present value of a machine be P. Suppose it depreciates at the rate R% per annum. Then,
    • Value of the machine after n years = P[1-(R/100)]n.
    • Value of the machine n years ago = P/[1-(R/100)]n.
  5. If A is R% more than B, then B is less than A by


    If A is R% less than B , then B is more than A by