Start learning 50% faster. Sign in now
Let the time taken by 'B' to finish the work be 'x' days. So, time taken by 'A' to finish the work = 'x - 15' days ATQ; (1/18) = (1/x) + {1/(x - 15) } Or, (1/18) X (x - 15) X x = (x - 15) + x Or, x2 - 15x = 18 X (2x - 15) Or, x2 - 15x = 36x - 270 Or, x2 - 51x + 270 = 0 Or, x2 - 45x - 6x + 270 = 0 Or, x(x - 45) - 6(x - 45) = 0 Or, (x - 45) (x - 6) = 0 So, x = 45 or x = 6 Since, at x = 6, time taken by 'A' to finish the work would become negative So, x = 45 So, 'B' would finish the work alone in 45 days. Hence, option a.
The 2022 Liberty Medal will be awarded to___?
What is the full form of BSBDA?
Which body of water does the Sunda Strait separate?
Which bank has launched a facility through which customers can now use Voice Biometric authentication for logging into the mobile banking app?
Recently Richard Howard died, he was ________.
Consider the following statements regarding UNESCO's "Memory of the World" recognition:
1. "Sultana’s Dream" by Begum Rokeya Sakhawat Hossain w...
What is RAPIDX and which routes does it connect?
I. India's first bullet train connecting Delhi to Mumbai
II. India's first semi-high-spee...
What was the target asset monetization under the National Monetization Pipeline for 2023-24?
Recently the all-India Consumer Price Index Number for Agricultural Labourers and Rural Labourers for the month of October 2022 was released by ______.
According to the Bloomberg Billionaire’s Index, Adani Group Chairman Gautam Adani has surpassed Reliance Industries Limited Chairman Mukesh Ambani to ...