The heights of a cone, cylinder and hemisphere are equal. If their radii are in the ratio 2:3:1, then the ratio of their volumes is:

The distance traveled by three cars in the ratio of 1: 2: 3. If the travel time ratio is 3: 2: 1, what is the ratio of their speed?

The monthly income of Shagun and Komal together is Rs.28000. The income of Shagun and Komal is increased by 25% and 12.5% respectively. The new income of Komal becomes 120% of the new salary of Shagun. What is the new income of Shagun?

If is a positive acute angle and 5 cosθ + 12 sinθ = 13, then find the value of cosθ?

The difference between the circumferences of two circles is 110 cm and the radius of the smaller circle is 14 cm. what is the radius of the larger circle?

Rewa has some hens and some goats. If the total number of animal heads is 100 and the total number of animal feet is 348, then what is the total number of goats with Rewa? 

If two numbers are respectively 20% and 50% of a third number, what is the percentage of the first number to the second?

A merchant fixes the sale price of his goods at 15 % above the cost price. He sells his goods at 12 % less than the fixed price. His percentage of profit is: