Question
150 unit of work can be completed by P alone in 25 days.
P started working alone and joined by Q after 15 days such that they completed the remaining work in 6 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 = (150/25) = 6 units/day According to question: 6 × 15 + (6 + x) × 6 = 150 Or, 90 + 36 + 6x = 150 Or, 6x = 150 – 126 Or, 6x = 24 Or, x = 4 Number of days taken by Q to complete the work alone = (150/4) = 37.5 days
The National Mission for Clean Ganga (NMCG) is aimed at which of the following?
What is the distance between the football goal posts?
Which private startup/company currently holds the highest reported private valuation (2024)?
Consider the following statements in regards to the Economic Survey of India 2022-23:
1.   India became the 2nd largest mobile phone manufac...
Below are two chemical equations:
Zn (s) + CuSO₄ (aq) → ZnSO₄ (aq) + Cu (s)
Pb (s) + CuCl₂ (aq) → PbCl₂ (aq) + Cu (s)
Which of the following is a human factor responsible for soil erosion?
1. Deforestation
2. Run off water
3. Overgrazing
...Which of the following towns was NOT designated as a Town of Export Excellence ( TEE ) in the FTP 2023?
The leaves danced in the wind.
The Registration of Birth and Death Act came into force in the year ___________.
A Governor shall, notwithstanding the expiration of his term, continue to hold office until ______________.
