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Given, x2 + y2 = 9 Squaring both sides, we get ⇒ x4 + y4 + 2x2y2 = 81 ⇒ x4 + y4 = 81 – 6 ⇒ x4 + y4 = 75
A man invested certain sum at 5% p.a. simple interest for his son who was 10 years old. If the amount received by the son when he was 30 years old is Rs...
A woman borrows Rs. 80,000 from a bank at 8% per annum. She invests Rs. 30,000 of it in a business at 12% per annum and the rest at 10% per annum. Calcu...
"R" made certain investments with a 40% annual compound interest rate that is compounded quarterly. If, 9 months later, he receives Rs. 1,99,650, then t...
The amount becomes ₹ 1,451.25 in one year on a simple rate of interest. If the rate of interest was 2% higher, the amount would have been ₹ 27 more...
An individual invests ₹1,200 at a simple interest rate of 5% per annum. After 2 years, they add ₹800 to the investment, and the total amount remains...
Gaurav borrowed Rs. 40000 from a bank at the simple interest of 10% p.a for 2 years. He lent some of this borrowed amount to his friend Shubham at the c...
If the ratio of the sum invested and simple interest received after 1 year is 20:11 respectively, then find the rate of interest.
Raman gave 50% of his savings of 126150 to his wife and divided the remaining sum among his two sons Aman and Bhusan of 15 and 13 years of age respectiv...
Suppose 'S' invested Rs. 40,000 each at 12% p.a. in two different Funds for 2 years, with one Fund offering compound interest (compounded annually) and ...
Viraj invested Rs. 3500 at 20% p.a. simple interest for 3 years. After 3 years, he invested the amount received by him at the 20% p.a. compound interest...
