Question
108 unit of work can be completed by P alone in 18 days.
P started working alone and joined by Q after 9 days such that they completed the remaining work in 3 days. Find the number of days taken by Q to complete the whole work alone.Solution
Let the efficiency of Q = x units/day Efficiency of P = (108/18) = 6 units/day According to question: 6 × 9 + (6 + x) × 3 = 108 Or, 54 + 18 + 3x = 108 Or, 3x = 108 – 72 Or, 3x = 36 Or, x = 12 Number of days taken by Q to complete the work alone = (108/12) = 9 days
नक्सलवाद की जन्मस्थली ’नक्सलबाडी ’ निम्न में से किस रा...
Which river's banks host the Indus Valley civilization site of Banawali?
The Human Development Index (HDI) is published annually by which organization?
Which company is leading India's largest hydrogen blending project in natural gas for cooking purposes?
Who is the pioneer female leader of the Central Industrial Security Force (CISF)?
What is the theme for World Earth Day on 22nd April 2024?
During which dynasty's rule was the Modhera Sun Temple, a protected monument in Gujarat, constructed?
The Parmanand Katara Vs Union Of India (1989) case is associated with which of the following?
Which river flows through Paris?
The term ‘red herring’ is associated with –