A runner starts running from a point at 6:00 am with a speed of 8km / hr. Another racer starts from the same point at 8:30 am in the same direction with a speed of 10km / hr. At what time of the day (in P.M.) will the second racer will overtake the other runner? 

Two students appeared for an examination. One of them secured 20 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are : 

The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term

Given that 10^0.48 = x, 10^0.70 = y and x² = y², then the value of z is close to

The volume of a sphere and an elliptical cylinder are the same. The radius of the sphere and cylinder are 21 cm and 14 cm respectively. What is the height of the cylinder?

Find the value of a and b if (x-1) and (x+1) are factors of x⁴+ax³-3x²+2x+b

A mixture of 40 liters of milk and water contains 30% water. How much milk should be added to this mixture so that the new mixture contains 80% milk?

Direction: Study the double bar graph given below and answer the questions.

The class having maximum number of participants in exhibitions: