The sum of three numbers is 136. If the ratio between the first number and the second number is 2 : 3 and that between the second and the third number is 5 : 3 then the first number is :

In a class of 40 students, ratio of boys and girls is 3:2 and the average marks scored by boys is 42 and that by girls is 46. Then the average marks scored by the whole class is:

An item is sold for ₹504 after allowing 20% discount and still a profit of 5% has been earned. The marked price is how much more than the cost price?

In an examination, it is required to get 300 marks to pass. A student gets 225 marks and is declared fail by 10% marks. What are the maximum marks of the examination?

A certain sum becomes ₹2,356 in 3 years and ₹2660 in 5 years on simple interest. The value of sum is:

The present age of Harish is 8 times the sum of the ages of his two sons at present. After 8 years, his age will be 2 times the sum of the ages of his two sons. The present age of Harish (in years) is :

In a square, lengths of the diagonals are \((4k + 6)\) cm and \((7k - 3)\) cm. The area of the square (in cm\(^2\)) is :

The sum of LCM and HCF of two numbers is 854. If the LCM is 60 times the HCF and one of the numbers is 70, then the other number is

The volume of a cylinder having base radius 3 cm is 396 cm\(^3\). Find its curved surface area (in cm\(^2\)). (Use \(\pi = \frac{22}{7}\))