Question
Reena and Teena together can do a piece of work in 60
days. Teena and Meena together can do it in 40 days. Reena starts the work and works on it for 10 days, then Teena takes up work for 30 days. Finally Meena finishes the work in 36 days. The number of days in which Meena alone can do the work where doing separately isSolution
According to the question, Reena = 10 Teena = 10 + 20 Meena = 20 + 16 Work Done by (Reena + Teena) in 10 days = 2 × 10 = 20 units Work Done by (Teena + Meena) in 10 days = 3 × 20 = 60 units Total work (Finished till now) = 80 units Remaining Work = 120 – 80 = 40 units Here we find that Meena does remaining 40 units in 16 days Meena’s efficiency = work/day = 40/16 = 5/2 Therefore, time taken by Meena alone to complete the work = 120 × `2/5`  = 48 days
___________ is also known as protocol convertor.
On color monitor each pixel is composed of ________.
Which of the options given below is not a type of live communication?
System software is the set of programs that enables your computer’s hardware devices and ____________ software to work together.
Which application software is uses rows and columns of data to perform calculations on ?
Which of the following is not a magnetic disk?
In a database, the term used for a row is called a:
Which one of the following is an email program?
What is the main purpose of antivirus software?
What is the shortcut command in MS Word 365 for selecting all the words in a file?
Relevant for Exams:
