By what percent is 2000 less than Rs. 2,400? Is it the same as the percent by which Rs 2,400 is more than 2,000?

Why is ICL more reactive than I_2 ?

A car and a bus start from a place P at the same time and move non-stop towards a place where the distance between P and Q is 210 km. The car takes half an hour less than the bus to arrive Q. If the average speed of the car is 10 km/h more than that of the bus, find the average speed of the car and the bus.

Find the least number greater than 400 which is divisible by 12, 15.

What is the height at which the value of g is the same as at a depth of R/2?

The hypotenuse of a right angle triangle is 6 cm more than twice the shortest side.If the third side is 2cm less than the hypotenuse ,find the sides of the triangle.

Kripabar posesses coins worth Rs. 25.40. Some of these are 50 paise coins and the rest are 10 paise coins. What is the number of coins of each kind he possesses? It is given that the he has 8 more 10 paise coins than 50 paise coins.

A train covered a certain distance at a uniform speed.If the train would have been 10 km/h faster,it would have taken 2 hours less than the scheduled time.And if the train were slower by 10 km/h,it would have taken 3 hours more than the scheduled time.Find the distance covered by the train.

A person cannot see objects nearer than 1.2 m from his eyes. He wants for read a newspaper placed at a distance of 30 cm clearly. What is the nature and the power of lens required for this purpose?

I have a total of Rs 300 in coins of denomination Rs 1, Rs 2 and Rs 5, the number of Rs 2 coins is 3 times the numbers of Rs 5 coins. The total number of coins is 160. How many coins of cash denomination are with me?