Question
Which combination of colour is the most convenient
during day and night time?Solution
Red and green is the most convenient combination during day and night time because of very precise visibility. In modem colour theory, also known as the RGB colour model, red, green and blue are additive primary colours. Red, green and blue light combined together makes whitelight, andthese three colours, combined in different mixtures, can produce almost any colour. This is the principle used to make the colours on computer screen and television.
In a school, 25% of the students like cricket, 40% like rugby and the rest like football. If the number of students who like football exceeds 50% of tho...
In an exam, a candidate scored 35% of the total marks and failed by 45 marks. If he had scored 50% of the total marks, he would have obtained 15 marks m...
- Out of a city's population, 30% are not eligible to vote. Of those who are eligible, 50% are females. If 2/5 of the eligible males and 3/10 of the eligible...
In a hotel, the monthly usage of Mixed Spices is 8 kg, and the cost per kilogram of Mixed Spices is Rs. 'a'. If the price per kilogram increases byÂ
Arjun sets aside 20% of his monthly earnings. If his monthly expenses rise by 45% while his monthly savings remain constant, determine the % increase in...
A student scored 72% in an exam of 750 marks. How many marks did he score?
A person spent 23% of his monthly income on food and 44% of the remaining on rent. If amount spent on rent is Rs 1694, then find the amount spent on food.
The ratio between the number of books and pencils is 6:5 and the ratio of cost of per book and pencil is 4:3 then find the percentage by which total cos...
A invested a certain amount in Debt and Equity mutual funds in the ratio of 5: 7 respectively. At the end of one year, he earned a total dividend of 30%...
Aman uses 70% of his monthly earnings, resulting in monthly expenses of Rs. 22,750. Riva's savings are 60% higher than Aman's and constitute 40% of her ...