Question
A can do a work in 10 hours while B can do the same work
in 15 hours. If C is 50% more efficient than A and B together, then find the time taken by C alone to complete the work.Solution
ATQ, Let the total work be LCM of (10 and 15) = 30 units
Work by A in one hour = 30 ÷ 10 = 3 units
Work by B in one hour = 30 ÷ 15 = 2 units
Work by A and B together = 3 + 2 = 5 units
C is 50% more efficient → C’s work = 5 + (50% of 5) = 5 + 2.5 = 7.5 units
Time taken by C = 30 ÷ 7.5 = 4 hours
Which of the following is a core component of an IoT system responsible for gathering data from the environment?
Which of the following is NOT typically considered a core component of an MIS?
Which operating system is developed by Google and is known for its open-source nature, widely used in smartphones?
Which of the following is NOT a common wireless security protocol?
Which of the following is a common application area for Industrial IoT (IIoT)?
Which layer of IoT focuses on transmitting data between devices and servers?
Which one of the following is used to update weights in neural networks?
Which of these wireless technologies is specifically designed for low-power IoT networks?
Which protocol is most commonly used for lightweight IoT messaging?
Which protocol is lightweight and widely used for IoT messaging?
