Skip to main content

Aptitude Day 189

Problems on Simple Interest:

1. A man took a loan from a bank at the rate of 10% p.a. simple interest. After 2 years he had to pay 3000 interest only for the period. The principal amount borrowed by him was:

Solution:
                 S.I = PTR/100

                 3000 = P*2*10/100
                  P = 3000*100/2*10
                  P = 15000.

2. What is the present worth of 160 due in 5 years at 10% simple interest per annum?

Solution:
                 Let the present worth be x.

                 S.I = PTR/100

                 160-x = x*5*10/100
                 x = 160-50x/100
                 x = 160-1/2(x)
                 x(1+1/2) = 160
                 x = 160*(2/3)
                 x = 106.67.

        

Comments

Post a Comment

Popular posts from this blog

Aptitude Day 332

Answers of Day 331: 1. 450%.                                     2. 10.   Problems on Percentage: 1. 0.001 is what percent of 0.01? Solution:                   0.001/0.01 * 100 = 1/10* 100                                               = 10%. 2. A fruit seller had some apples. He sells 20% apples and still has 500 apples. Originally, he had: Solution:                (100-20)% of x = 500                80/100*x = 500                x = 625.
Post a Comment
Read more

Aptitude Day 66

Problems to solve: 1. 90 has been divided into 3 parts such that the one-third of the first part, the second part and the one-fourth of the third part are equal. Find the middle number. 2. Of the 3 numbers, the sum of the first number and the twice of the second number is 55, the sum of the second and the third numbers is 45 and the sum of the third and the first numbers is 40. Find the smallest number.     Hey guys... From tomorrow we're going to work on the problems based on Ratio and Proportion. So stay tuned.
Post a Comment
Read more