Question
Rohan covered first half of his journey at 32 km/h and
other half at 48 km/h. Find his average speed throughout the journey.Solution
Average speed = {(32 x 48 x 2) ÷ (32 + 48)} = 38.4 km/h
A person 'P' invested Rs. 5,600 at a simple interest rate of 25% per annum for a specific duration, resulting in a total amount o...
To construct a house, 18 workers laboring 5 hours daily complete the job in 22 days. If the workforce increases to 24 workers, each working 7.5 hours pe...
A car travels from City A to City B, which is 240 km apart. It travels the first 120 km at a speed of 60 km/h and the remaining distance at a speed of 8...
The radius of a cylinder is 3 cm and its height is 10 cm. What is its total surface area?
- 'R' started his journey from point 'X' towards point 'Y' at 40 km/h. Three hours later, 'S' left point 'X' towards point 'Y' at 70 km/h. 'T' left point 'X'...
In order that the lines y = x + 1, 2x - 3y + 5 = 0 and 3x - y + m = 0 may meet in a point, the value of m should be:
if p:q = 3:4 and q:r = 1:2, the find the value of (4p + 3q + r):(2p + 5q - r)
If cos θ = 3/5, find the value of sin 2θ:
Find the rank of the word 'PROPER' in dictionary order among all its permutations.
The sides of a triangle are 9 cm, 12 cm, and 15 cm. What is the area of the largest circle that can be inscribed in this triangle?