A man can row 25/2 km an hour in still water and he finds that it takes him thrice as long as long to row down the river. The rate of stream is:
Let the rate of stream be x km/hr Then, Speed of downstream = [(25/2) + x] km/hr Speed of upstream = [(25/2) - x]km/hr [(25/2) + x] = 3 [(25/2) - x] (25/2) + x = (75/2) - x 4x = 25 x = 6.25 km/hr
From a point on a circular track 10 km long A, B and C started running in the same direction at the same time with speeds of 3(1/3) km/h, 5 km/h and 2 k...
The HCF of two numbers is 12. Which one of the following can never be their LCM?
Three boys step off together from the same spot. Their steps measure 64 cm, 80 cm and 88 cm respectively. The minimum distance each should cover so that...
The sum of two numbers is 99 and their HCF is 11. Total number of such pairs of numbers is?  Â
If HCF of two numbers is 11 then which of the following can never be their LCM?
The ratio of two numbers is 5:10 and their LCM is 100. The numbers are:
The LCM of two numbers is 40 times its HCF. If the product of the numbers is 1440, find their HCF.
The sum of two numbers is 126 and their HCF is 14. Total number of such pairs of numbers is?  Â
What is the least number of square tiles required to pave the floor of a room 11 m 47 cm long and 6 m 82 cm broad?
