Question
P, Q and R three pipes connected to a tank. P and Q
together fill the tank in 30 hours, Q and R together fill the tank in 40 hours. P and R together fill the tank in 60 hours. In how much time will P, Q and R fill the tank separately?Solution
A + B fill in 30 hrs B + C fill in 40 hrs A + C fill in 60 hrs 2(A + B + C) fill in (30 × 40 × 60) ÷ (30 × 40 + 40 × 60 + 60 × 30) = 40/3 hours Therefore A + B + C fill the tank in 80/3 hours Now, A = (A + B + C) – (B + C) fills in (3/80 - 1/40) = 1/80 = 80 hours Similarly B fills in (3/80 - 1/60) = 1/24 = 48 hours And C fills in (3/80 - 1/30) = 1/240 = 240 hours.
The National Highways Authority of India (NHAI) aims to develop around 10,000 km of Optic Fibre Cables (OFC) infrastructure by which fiscal year?
What is the capital of Vanuatu?
The government is going to sell up to three per cent stake in Coal India Ltd through the offer for sale route. The sale of 3 per cent stake in Coal Indi...
Who took oath as the 9th President of Sri Lanka in 2024?
When did the India-UAE Comprehensive Economic Partnership Agreement (CEPA) come into effect?
How many GPU supercomputers will India build for self-reliant AI advancement?
- When was the Reserve Bank of India (RBI) established?
Who has been appointed as the new Revenue Secretary in the Ministry of Finance?
- Which statement regarding the repo rate is INCORRECT?
- Where was the “Urban Adda 2025” conference recently inaugurated?