Question
12 years ago from now, ratio of ages of ‘R’ and
‘L’ was 3:5, respectively. If ‘L’ is 8 years elder to ‘R’, then what will be the age of ‘L’, 4 years hence from now?Solution
Let present ages be: R = r, L = l Given: L is 8 years older than R l = r + 8 12 years ago: (r − 12) : (l − 12) = 3 : 5 (r − 12)/(l − 12) = 3/5 5(r − 12) = 3(l − 12) 5r − 60 = 3[(r + 8) − 12] 5r − 60 = 3(r − 4) 5r − 60 = 3r − 12 2r = 48 r = 24 l = r + 8 = 24 + 8 = 32 L’s age 4 years hence = 32 + 4 = 36
The process of transferring files from a computer on the Internet to your computer is
Which of the following hardware can provide Firewall security
Which layer of the OSI model is used for establishing, maintaining, and terminating sessions between two devices?
What is the main purpose of DNS (Domain Name System)?
Which protocol is primarily used for browsing websites over the internet?
Which of the following is not a type of broadband Internet connection?
Which device connects LAN to Internet :
What is the default port number used by the Post Office Protocol version 3 (POP3) for non-encrypted email retrieval?
What is the primary purpose of an IP address?
The process of transferring files from computer on the internet is called:
