Question
What is A's present age, if after 10 years his age will
be 6 times his age 10 years back?Solution
Let A's present age be x. A's age 10 years ago = (x - 10) A's age after 10 years = (x + 10) According to question, =>(x + 10) = 6 (x – 10) => x + 10 = 6x – 60 => 5x = 70 => x = 14 years
10 lakh candidates write the TNPSC Exam this year. If each exam centre is allotted with 1000 candidates. How many exam centres would be needed?
If a/b = 3/5, b/c = 4/7 then a:b:c is
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A machine bought at Rs. 50,000 falls in its value by 8% of its value every year. Find the value of the machine after 2 years.
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