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Two trains started at the same time, one from A to B and other from B to A. They arrive at B and A respectively in 2 hours and 8 hours after they pass each other, what is the ratio of speeds of the two trains?
If a : b = 2 : 3 and b : c = 2 : 3, then wat is the value of (3a2 + b2 + c2) : (a2 + 2b2 + c2)?
A can do a certain work in 15 days. B is 10% less efficient than A, and C is 20% more efficient than A. All the three work together for 3 days. The remaining work is completed by D alone in days. D alone can complete the original work in:
Riya runs 3/2 times as fast as Prerna. In a race, if Riya gives a lead of 100 m to Prerna, find the distance Riya has to run before both of them meet.
When the article sold at the rate of Rs.3753 earned a profit of 11% more than that of the loss incurred when the same article sold at the rate of Rs.1432. Find the Cost price of the article.
If 15 boys earn ₹900 in 5 days, then how much will 20 boys earn in 7 days?
The ratio of the cost price of an item and the profit gained while selling the item is 4 : 1. What is the profit percentage?
Cost price of 9 articles is equal to selling price of 12 articles. What is profit% or loss%?
If the volume of a solid right circular cone is v cm3 and its height is h cm, then the radius of the cone is:
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