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I. 12a2– 55a + 63 = 0 12a2– 27a – 28a+ 63 = 0 3a (4a - 9) – 7 (4a - 9) = 0 (3a-7) (4a-9) = 0 a = 7/3, 9/4 II. 8b2 – 50b + 77 = 0 8b2 – 28b – 22b + 77 = 0 4b (2b – 7) – 11(2b – 7) = 0 (4b-11) (2b-7) = 0 b = 11/4, 7/2 Hence, a ˂ b
Vishal has certain sum of money with him. He invested 80% of the sum in scheme ‘X’ offering 15% p.a. simple interest for 8 years and received Rs. 20...
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2500 after 5 years. If the same amount is investe...
Rs. (2x + 400) is invested at a rate of 20% per annum, yielding an interest of Rs. 3200 after 4 years. Calculate the interest earned when Rs. (x + 100) ...
A sum of ₹6,450 is invested for 3.5 years at a certain annual rate of simple interest, yielding a total interest of ₹2,709. If ₹3,500 is then inve...
A sum on simple interest becomes 9/4 times of itself in five years, find the rate of interest.
Anjali invested Rs.24000 in a scheme offering compound interest of x% p.a. compounded annually. If at the end of 2 years, interest received by her from ...
A sum of money lent at compound interest at the rate of 10% per annum is paid back in three equal instalments of Rs 3,993. Find the sum?
What will be the amount if a sum of Rs. 5000 is placed at compound interest for 3 years while the rate of interest for the first, second and third years...
The interest earned on investing Rs. 1000 for 2 years at the rate of 20% p.a., compounded annually, is used to purchase an article. If the article is la...
Rahul deposits a sum of money at an annual compound interest rate of 15%. After 1 year, the interest accumulated amounts to Rs. 180. If he increases his...
