Question
A boy can swim in water with a speed of 15 km/hr in
still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover 60 km downstream?Solution
Downstream Speed = (15 + 5) km/hr = 20 km/hr Time taken = 60/20 = 3 hours
Sum of first 10 terms of a GP is equal to the sum of the first 12 terms in the same GP. Sum of the first 15 terms is 31, what is the third term in the GP?
A candidate just passed by getting 150 answers correct by attempting 225 of the total questions. Find the total number of questions in the examination i...
The surface area of the two spheres are in the ratio 4:9. Their volumes will be in the ratio.
If the radius of a circle is given up to 15 times, how much of its perimeter will be the perimeter of the previous perimeter?
A cube of 25 cm side is divided into 125 smaller cubes of equal volume. Find the side of smaller cubes:
A man wants to cover the floor of his living room with square tiles. The dimensions of the room are 36 cm in length and 24 cm in breadth. What is the mi...
- In a right-angled triangle, if the shortest median is 6.2 cm, calculate the length of the hypotenuse.
The length, breadth and height of a storeroom are 14m, 9m and 10m respectively. If each box occupies 60 m3 of space, then how many boxes can ...
The sum of the area of rectangle A and B is 2964 cm 2 . The ratio between the breadth of rectangle A and length of rectangle B is 2:3 respect...
- Find the height of a cone if its radius is 14 cm and curved surface area is 1320 cm².
Relevant for Exams:
