The cost of Type 1 material is Rs. 15 per kg and Type 2 material is Rs.20 per kg. If both Type 1 and Type 2 are mixed in the ratio of 2 : 3, then what is the price per kg of the mixed variety of material?

Five years ago the ratio of the ages of A and B 2 : 3 and after 7 years it will be 4 : 5 What is the present age of  ‘A’?

Mr. Gangadhar, Mr. Ramesh and Mr. Shridhar together earned 19800. The ratio of earnings between Mr. Gangadhar and Mr. Ramesh 2:1 while that between Mr. Ramesh andMr. Shridhar is 3:2. How much did Mr. Ramesh earn?

Two friends P and Q started a business investing amounts in the ratio of 5:6. R joined them after six months investing an amount equal to amount Q’s amount. At the end of the year 20% profit was earned which was equal to  98,000. What was the amount invested by R?

If the number of students appeared from State A in 1997 was more than that in 1996 by 20%, what was the ratio of numbers qualified in the State A in 1996 and 1997 respectively?

If 0.4 of a number is equal to 0.06 of another number, the ratio of the numbers is: