Question
The income of ‘A’ increases by 10% every year. If
his income 2 years hence from now will be Rs. 39930, then find his income a year before from now.Solution
Let the present income of ‘A’ be Rs. x Therefore, x(1 + 10/100)2 = 39930 Or, x = 39930/(1.1)2 = 33000 Therefore, his income a year before from now = 33000/1.1 = Rs. 30000
If the average of two numbers is 13 and the square root of their product is 12, then the difference between the numbers is:
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