For the following questions answer them individually
What should come in place of the question mark (?) in the following question?
$$[((16\div4)\times4)\div4]=?$$
Ajay can row hisboatin still water, at a speed of 6 kmph.If the speed ofthe stream is 4 kmph, how long will he take to a distance of 30 km downstream?
An inlet pipe takes 8 hoursto fill a tank. An outlet pipe takes 12 hours to empty it. If both pipes are opened simultaneously, in how many hours will the tank be filled?
If the profit made by a merchant onselling 45 m of cloth is equal to the selling price of 5m of cloth, then his profit percentage is:
Two parallelogram stand on equal bases and between the same parallel. The ratio of their areas is:
Rajaram purchased a certain amount of wheat. If he sold one-fourth of the wheat at a profit of 12%, then the profit percent he needs to make on the remaining wheat to make an overall profit of 15% is:
Sanjay scored 75 out of 150 marks in his mid-term exam and 105 out of 150 in his annual exam. The percentage increase in his marks is:
The average marks of 42 students in an examination, was 64. Later it was found that the marks of three students were misread as 72, 58 and 44 instead of the actual marks 64, 42 and 26 respectively. What is the correct average marks?