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Light travels in a straight line. Light in the air is 1.0003 times slower than light in a vacuum, which slows it all the way down from 299,792,458 meters per second to 299,702,547 meters per second. That's a slowdown of 89,911 meters per second, which looks like a lot but is only three ten- thousandths of the speed of light. The speed of light in the air is 3 x 108 m/s.
Sonia goes to a clothing store with a certain amount of money. She can buy 90 shirts or 30 trousers with the money she has. However, she decides to save...
A girl spent 15% of her monthly income on clothing. Of the remaining, she spent on travel and food in the ratio of 5:3. If the difference of the income ...
A car's value decreases by 20% every year. If the car was purchased for Rs 3,30,000, what will be the total percentage decrease in its value over a 3-ye...
A person saves 25% of his monthly income. If his monthly is increased by 35% and he still saves the same amount as before then find percentage increase ...
The income of Tina is Rs.20000 and she saves 25% of her income. The savings of Kajal is Rs.1200 more than that of Tina and she spends 50% of her income....
A spent 30% and 20% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 21% and 14% to his mother and brother, respec...
The price of wheat has increased by 45%. Mohit has decided to spend only 16% more than what he initially did on buying wheat. What is the percentage dec...
The income of Tina is Rs.24000 and she saves 15% of her income. The savings of Kajal is Rs.2000 more than that of Tina and she spends 60% of her income....
The respective ratio of monthly income of A to monthly income of B is 11:12, and A’s saving is (100/17)% more than B’s saving. Find the expenditure ...
The monthly income of Vivek and Sohan together is Rs. 46000. The income of Vivek and Sohan is increased by 20% and 30% respectively. The new income of ...
