This problem involves calculating the new ratio between two salaries after applying percentage increases.
Let the initial salaries of A and B be $4x$ and $5x$ respectively, based on the given ratio of 4:5.
A's salary is increased by 10%:
B's salary is increased by 20%:
The new ratio of A's salary to B's salary is calculated by dividing their new salaries:
Therefore, the new ratio of A's salary to B's salary is 11:15.
A huge collection of gas, dust and billions of stars is called a:
The Greenwich Mean Time is the local time at :
The force exerted by rotation of the earth is known as:
How many hours is one solar day
Moon changes its shape everyday due to: