Question
Which of the following technological inventions came
first?Solution
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They found use in both terrestrial applications and astronomy.
The difference between compound interest and simple interest at rate of 22% per annum for 2 years is Rs. 484. Find the simple interest obtained on same ...
What will be the ratio of simple interest earned on certain amount at the same rate of interest for 8 years and that for 10 years?
Arjun borrowed Rs. 5000 at R% S.I. and Rs. 6000 at (R + 5)% S.I. for 2 years. The total interest paid was Rs. 2800. Find the rate at which he borrowed R...
A certain sum of money becomes Rs. 1960 in 1 year and 3000 in 3 years at certain rate of simple interest. Find the sum of money invested.
Ravi invests Rs. 'p' in Scheme 'X' and Rs. (p + 3,000) in Scheme 'Y'. Scheme X gives simple interest at 10% per annum for 24 months, while Scheme Y offe...
A certain sum of money invested at R% p.a. fetches a compound interest (compounded annually) of 1630.5 and simple interest of Rs.1500 at the end of 2 ye...
Atul invested in scheme A and B that provide simple interest at the rate of 12% and 15% for 3 years and 5 years, respectively. Interest received from sc...
A man wants to invest Rs. 60660 in bank accounts of his two sons whose ages are 12 years and 16 years in such a way that they will get equal amount at a...
A man invested Rs. 20,000 at simple interest of 10% p.a. If he had instead invested the same sum on compound interest of 10% p.a., compounded annually, ...
A person invested a sum of Rs. 9000 at r% per annum at simple interest and a sum of Rs. 13500 at (r-4)% at simple interest. If total interest earned on ...
Relevant for Exams:
