Question
Bus 'X' and Bus 'Y' start together from a station heading
in the same direction. Bus 'X' moves at 18 km/h while Bus 'Y' moves at 30 km/h. Determine the distance between them after 150 seconds.Solution
ATQ,
Relative speed of Bus 'Y' w.r.t Bus 'X' = 30 - 18 = 12 km/h
So, distance covered in 150 seconds = 12 Γ (5/18) Γ 150 = 500 metres
Find minimum of x + 9/x for x>0.
If logβ(81) = 4/3, find x.
A cone has a height of 12 cm and a base radius of 5 cm. A sphere with the same volume as the cone is constructed. What is the radius of the sphere?
Evaluate: {0.808 of 7500 - 80 Γ (1.458 + 2.242)}
The cost price ratio of the item 'watch' to the item 'ring' is 3:2, while the cost price ratio of the item 'ring' to the item 'ke...
The average of 20 numbers is 62. If 3 is added to each number, then the new average will be:
Find the smallest number that is divisible by 4, 6, 10, and 13.

A car travels 60 km at a speed of 30 km/hr, then 90 km at a speed of 45 km/hr, and finally 80 km at a speed of 40 km/hr. Find the average speed of the c...
If the geometric mean of 4, 18, and (p + 4) is 12, what is the value of '0.4p'?