Question
What is a variable? Â Â Â Â Â Â Â
Solution
Variables hold pieces of data temporarily. For example, a program might ask for a user's name when it first executes. The user name is temporarily stored as a variable and the program may refer back to that data until the user ends the program.
A boat running downstream covers a distance of 24 km in 3 hrs while it covers the same distance upstream in 6 hrs. Then speed of the boat in still water is
A boat can cover 120 km in downstream in 12 hours and 100 km in upstream in 10 hours. Find the distance travelled by the boat in still water in 5 hours.
Speed of a boat in still water is 25% less than its downstream speed. If the upstream speed of the boat is 24 km/h, find the downstream distance covered...
Find the total distance covered by boat in each upstream and downstream in 6 hours if the speed of boat in still water and speed of current is 20 km/h ...
In still water, the speed ratio of boats A and B is 10:7. Boat A’s still-water speed is twice the stream speed. If A covers 180 km downstream in 6 hou...
A swimmer swims from a point A against a current for 12 minutes and then swims backwards in favour of the current for next 12 minutes and comes to the p...
- The time to travel (x – 35) km upstream is the same as the time for (2x – 115) km downstream. Given the boat’s speed is 11 km/h and the stream’s sp...
A boat covers a distance of 150 km while moving in a downstream in 5 hours. When the boat covers a distance of 60 km in still water in 3 hours, then Wha...
- The current age ratio of Aman and Arjun is 3:4, respectively. After 6 years, their ages will be in the ratio 4:5. What is Aman’s present age?
A boat travels 315 km downstream in 7 hours and 135 km upstream in 9 hours. Determine the total time the boat takes to cover 150 ...
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