Sir Isaac Newton brought out his monograph, titled `Philosoplliae Naturalis Principia Mathematica,' in 1687. In this work, Newton described universal gravitation and the three laws of motion, which dominated the scientific view of the physical universe for the next three centuries. Newton showed that the motions of objects on Earth and of celestial bodies are governed by the same set of natural laws,bydemonstratingtheconsistencybetween Kepler'slawsofplanetalymotionandhistheory of gravitation, thus removing the last doubts about helio-centrism and advancing the Scientific Revolution.
The current ages of 'A' and 'B' are in the ratio 4:7. Currently, 'B' is 8 years younger than what 'C' was 6 years ago. If 'C' is 42 years old now, what ...
Mahesh said to his son, “At the time of your birth” I was as old as you are at present. If the Mahesh’s age is 42 years now then what will be the ...
4 years ago, Amandeep's age was 1.5 times that of Amanpreet. 4 years from now, the age difference between Amandeep and Amanpreet will be 20 years. What ...
A is 3 years older than B while C is 5 years younger than B. The ratio of age of A, 6 years hence and age of B, 3 years ago is 4:3. What was age of C, 1...
A is 10 years older than B and B is 14 years younger than C. If the sum of the ages of A, B and C is 54 years, then what is B’s age after 9 years?
A certain sum of money becomes 4 times of itself in 15 years at simple interest. In how many years does it become double of itself at the same rate of s...
C is three years older than B, while ratio of age of A to that of B four years ago was 3: 5. If age of A eight years later will be equal to the age of C...
7 years ago, the ratio of the ages of Pia and Qasim was 9:7. The present age of Tom is 20 years more than one-seventh of Qasim’s present age. Find Tom...
The ratio of the present ages of ‘A’ and ‘B’ is 8:5, respectively. Three years hence from now, the age of ‘B’ will be 23 years. If the avera...
In a family of four, the average age of Anu, Ben, Carla, and Dan is 28 years. The ratio of Carla's to Eva's present ages is 5:6, and Ben's age is 20% le...
