Question
Present ages of ‘A’, ‘B’ and ‘C’ are in the
ratio 12:13:16, respectively. If present average age of ‘A’ and ‘C’ is 28 years, then find the age of ‘B’ when ‘C’ was 20 years old?Solution
Let the present ages of ‘A’, ‘B’ and ‘C’ be ‘12x’ years, ‘13x’ years and ‘16x’ years, respectively. ATQ; (16x + 12x) ÷ 2 = 28 Or, 28x = 56 So, x = 2 So, present age of ‘C’ = 16 × 2 = 32 years Present age of ‘B’ = 13 × 2 = 26 years Difference between the ages of ‘B’ and ‘C’ = 32 – 26 = 6 years So, age of ‘B’ when ‘C’ was 20 years old = 20 – 6 = 14 years
What is the purpose of "Multi-factor Authentication" (MFA)?
What does the acronym "BIOS" stand for?
A scanner is classified as which type of device?
A web _______ consist of one or more Web pages located on a Web pages located on a web server
Which technology is used in a "Voice Assistant" like Siri or Alexa?
Which is not a storage device?
What software applications would be the most suitable for performing numerical and statistical calculations?
Which one of the following is different from other members ?
What is object of UPS?
What type of scheduling is round-robin scheduling?