Arithmetic1

Normal in all problems they will ask time period as years. But in some problems they will give time period as number of days, then you need to calculate the number of of days in given period. The following table shows the number of days in a given year for various months. Months Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec No. of days 31 28/29 31 30 31 30 31 31 30 31 30 31 Points to remember 1.        If the time period of time includes february month, then we have to observe whether the given year is leap year (or) not.                     Leap year – february month --------------> 29days              Non leap year - february month ---------------->28days 2.        If you are taken a loan today and you are cleared a loan tomorrow. Then                            Counting the no of days = 2days                    

In all competitive exams questios on simple intrest ar common.now we will see simpl interest. When we will go to a bank manager and we will asked a loan of Rs.100/-. He will say that” the rate of interest is 12% per anum”. What is the rate of interest? When we are taking Rs.100/- from a bank at 12% rate of interest mean’s after one year we need to pay Rs.12/- extra along with Rs.100/-.                 The following table shows the interest payable at every year end. Time to double the principla amount:if we are taken Rs.100/- then time taken to double the amount at 10% interest is 10 years. The interest becomes Rs.100/- equal to principal. So amount=principal+interest=100+100=200/-.Means in 10 years principal =Rs.100/- & amount=Rs.200/- means Rs.100 is getting double in 10 years at a !0% rate of interest.

1/1-25 1/26-1/50 1/51-1/75 1/76-1/100 1/1 = 1.0000 1/26 = 0.0385 1/51 = 0.0196 1/76 = 0.0132 1/2 = 0.5000 1/27 = 0.0370 1/52 = 0.0192 1/77 = 0.0130 1/3 = 0.3333 1/28 = 0.0357 1/53 = 0.0189 1/78 = 0.0128 1/4 = 0.2500 1/29 = 0.0345 1/54 = 0.0185 1/79 = 0.0127 1/5 = 0.2000 1/30 = 0.0333 1/55 = 0.0182 1/80 = 0.0125 1/6 = 0.1667 1/31 = 0.0323 1/56 = 0.0179 1/81 = 0.0123 1/7 = 0.1429 1/32 = 0.0313 1/57 = 0.0175 1/82 = 0.0122 1/8 = 0.1250 1/33 = 0.0303 1/58 = 0.0172 1/83 = 0.0120 1/9 = 0.1111 1/34 = 0.0294 1/59 = 0.0169 1/84 = 0.0119 1/10 = 0.1000 1/35 = 0.0