While writing average of 10 given numbers, a student by mistake wrote 64 in place of a number 46 and got average 50. Find his actual average
Milk contains 5% water. What quantity of pure milk should be added to 10 liters of milk to reduce this to 2%?
The average age of a man and his daughter is 19 years. The ratio of their ages is 16:3. What is the difference between the ages of father and daughter after 6 years?
A company import two varieties of cement, A at Rs 15 per kg and B at Rs 30 per kg from a manufacturer in China, and sells them at Rs 30 per kg thereby gaining 25%. Find the ratio in which he mixes the two varieties of cement.
In the aptitude of a multinational company having 100 questions at TNEA University, a student gets +4 marks for attempting a question correctly and -1 for attempting it wrong. If a student scores 200 marks in the test, find the number of question attempted wrong by the candidate. Assume that the student attempted all the questions.
Juhi buys a famous perfume Burberry, at the rate of Rs 1000 per litre. She has stored 90% and 60% solution of the perfume in two separate bottles. She receives an order where she needs to make a profit of 25% by selling a mixture at Rs 1000 per litre. In what ratio, should she mix the perfumes from the two bottles?
The ratio of present income of Rahul and that of one year ago is 3:2, and that of Narendra is 5 : 4. One year ago, the ratio of income of Rahul and Narendra was 3:5. If their total current income is Rs. 4300, find their individual present income?
The average revenue of Shatabdi Express and Gatimaan Express is Rs 20 crore. The average income of Rajdhani Express and Durranto Express is 25 crore. What would be the average income of Shatabdi Express, Gatimaan Express, Rajdhani Express and Durranto Express?
