A student has to score 33% marks to pass. He gets 117 marks and fails by 81 marks. Find the student’s marks percentage?

15% of 45% of a number is 105.3 What is 24% of that number?

If A earns $$ {33{1\over 3} \%}$$  more than B, how much percent does B earn less than A?

If the diameter of a wire is decreased by 10% by how much per cent (approximately) will the length be increased to keep the volume constant?

Find the greatest perfect square number of 5 digits.

A man earns a profit of 60% when he sells an article at 4/3 of the original selling price. Find the percent profit he makes at original price.

When the price of an audio system was reduced by 20%, the sale increased by 80%. What was the net effect on the sale?

In a company, there are 75% skilled workers and remaining ones are unskilled. 80% of skilled workers and 20% of unskilled workers are permanent. If number of temporary workers is 126, then what is the number of total workers?