What is the speed of the stream and that of the boat in still water if the boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream.?

Points A and B are 70 km apart on a highway. A car starts from A and another car starts from B at the same time. If they travel in the same direction, they meet in 7 hours, but if they travel towards each other they meet in hour, what are their speeds?

A train covered a certain distance at a uniform speed. If the train would have been 6 km/hr faster, it would have taken 4 hours less that than scheduled time and if the train were slower by 6 km/hr, it would have taken 6 hours more than the scheduled time. Find the length of the journey?

The area of a rectangle gets reduced by 9 square units if its length is reduced by 5 units and the breadth is increased by 3 units. If we increase the length by 3 units and breadth by 2 units, the area is increased by 67 square units. Find the length and breadth of the rectangle?

A man bought 4 horses and 9 cows for 1340. He sells the horses at a profit of 10% and the cows at a profit of 20% and his whole gain is 188. What price did he pay for the horse?

A man starts his job with a certain monthly salary and earns a fixed increment every year. If his salary was 1500 after 4 years of service and 1800 after 10 years of service what was his starting salary and what is the annual increment?

Isha 28/10/2016 in Class IX-X Tuition, Mathematics(Class IX-X Tuition), Linear Equations

What is the speed of the stream and that of the boat in still water if the boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can go 40 km upstream and 55 km downstream.?