Question
In a mixture of wine and water, there is only 28% water.
After replacing the mixture with 5 litre of pure wine, the percentage of wine in the mixture becomes 74%. Find the quantity of new mixture?Solution
Ratio = 13:1 new mixture = 13 + 1 = 14 units Mixture = 14 × 5 = 70 litre Alternate Method: Initially water is 28% and finally water is 24% This means, 2% water is removed due to the removal of 5 litre of the mixture. In other words, 5 litre of the mixture contains 2% of water Therefore, to contain 28% of water, mixture quantity = (5 x 28)/2 = 70 litre
Which of these services uses a "master password" to log in to many different Web sites for you?
An assembler is a
A ______ is a portable computer that encompasses a microprocessor, rechargeable battery, fold-down screen, keyboard and mouse.
A megabyte is equal to _______ bytes.
Which of the following is not the main function of BIOS?
You organise files by storing them in
Before granting access a computer checks from the database which of the following?
Which of the following operating systems is the most expensive?
Which of the following keys is not on the number keypads?
A ________ is a graphical control element which contains drop – down menus.
