Question
Two pipes A and B can fill a tank in 12 min., and 16
min, respectively. If both the pipes are opened simultaneously, after how much time A should be closed so that the tank is full in 12 minutes?Solution
Let A be closed after x minutes. Then, Part filled by (A + B) in x min. + part filled by B in (12 – x) min. = 1 x (1/12 + 1/16 ) + (12 – x ) × 1/16 = 1 ⟹ (7 x)/48 + (12 - x)/16 = 1 ⟹ (7 x)/48 + 3/4 - x/16 = 1 ⟹ (4 x)/48 = 1/4 ∴ x = 3 ∴ Hence, A must be closed after 3 minutes.
India has assumed the role of Vice-Chair for which component under the Indo-Pacific Economic Framework for Prosperity (IPEF)?
World Rabies Day is observed every year on which day?
Recently Uma Dasgupta passed away at the age of 84, who was she by profession?
__________ will host the National games 2022?
The Panchayat Samiti remains accountable for its functions to
Which company introduced the AI chatbot "Jugalbandi" for rural India?
Which Tiger Reserve in India is home to the Erenga Kharias and Mankirdias tribes?
RBL Bank and _____ announced a strategic collaboration to fuel the Bank's customer experience strategy and expand its value proposition.
The Triple Talaq Case (2017) declared instant Triple Talaq:
Consider the following statements in regards to Jal Shakti Abhiyan:
1. Jal Shakti Abhiyan-I launched in 2020
2. National Water Mission is ...
Relevant for Exams:
