Skip to main content

Aptitude Day 187

Problems on Simple Interest:

1. A person borrows 10000 for 3 years at 5% p.a. simple interest. He immediately lends it to another person at 3(5/9) p.a. for 3 years. Find his gain in the transaction per year.

Solution:
                 R = 3(5/9) = 32/9.

                 Total Gain = 10000*3*5/100 – 10000*(32/9)*3/100
                          = 10000*3/100 [5-32/9]
                          = 300 [(45-32)/9]
                          = 300(13/9)
                          = 433.29.

                 Gain per year = 433.29/ 3 = 144.43.

2. How much time will it take for an amount of 500 to yield 250 as interest as 5% per annum of simple interest?

Solution: 
                  S.I = PTR/100
                  250 = 500*5*T/100

                  T = 10 years. 

Comments

Popular posts from this blog

Aptitude Day 59

Answers of Day 58:     1. 1/90.     2. 20 Problems to solve: 1. The product of two numbers is 33 and the sum of their squares is 130. Find their difference. 2. The sum of two numbers is 100 and their difference is 20. Find their product.

Aptitude Day 47

Problem On Numbers 1. Three numbers are in the ratio 1:2:3 and their average is 180. What's the largest number? Solution:                 Let the numbers be x, 2x and 3x.                 x+2x+3x = 180                          6x = 180                            x = 30                The largest number is 3x = 90. Problem to solve: Three numbers are in the ratio of 4:2:3 and their product is 648. Find the smallest number.