Moving 6/7 of its usual speed a train is 10 minute late. Find its usual time to cover the journey

Ravi and Kavi start a bussiness by investing 8000₹ and 72000₹, find the ratio of their profits at the end of year

In what propertion must a grocer mix wheat at 2.04 rupee per kg and 2.88 rupee per kg so as to make a mixture of worth 2.52 rupee per kg ?

A container contains a mixture of two liquids A and B in the ratio of 7:5 , when 9l of mixture is drawn off and the container is filled with B , the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the container initially??

A car starts running with the initial speed of 40 km/h with its speed increasing every hour by 5 km/h . How many hours will it take to cover a distance of 385 km ?

In how many ways, the letters of the word 'BANKING' can be arranged ?