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Start learning 50% faster. Sign in nowSir 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, by demonstrating the consistency between Kepler's laws of planetaly motion and his theory of gravitation, thus removing the last doubts about helio-centrism and advancing the Scientific Revolution.
In 2021, Ravi's income was Rs. 18,000, out of which he spent 35% and saved the rest. In 2022, if Ravi's income increased by 15% a...
A shopkeeper marks an item at ₹800 and offers a 20% discount. He still makes a profit of 25%. What is the cost price of the item?
Rakesh obtained 25% more marks than Ambuj and Suresh obtained 40% less marks than Rakesh. Marks obtained by Suresh are what percent less than marks o...
A student multiplied a number by 3/5 instead of 5/3, What is the percentage error in the calculation ?
...The station master decides that the length of the rectangular digital board be increased by 5% and the width be reduced to 7%. Find out the total change...
A girl found the answer for the question “subtract the sum 1/2 and 1/8 from unity and express the answer in decimals” as 1.5. The percentage...
In an election, candidate 'A' secured 56% of the total votes cast, while candidate 'B' garnered 85% of the remaining votes. Among the votes received by ...
A person spends 25% of his income on house rent, 20% of the remaining money spends on food, and 15% of theremaining money on travelling and saves Rs. 30...
Out of 1200 people in a city, 40% speak Mandarin and the rest speak Cantonese. If out of non-Mandarin speakers, 35% are males and out of Mandarin speake...
