Question
Sneha and Meena can complete a project in 24 days and 60
days respectively. Sneha began working first. After how many days should Meena step in so that the project is completed in 20 days?Solution
ATQ,
Let the total work be 120 units (LCM of 24 and 60)
Efficiency of Sneha = (120 / 24) = 5 units/day
Efficiency of Meena = (120 / 60) = 2 units/day
Let Meena join after 'n' days.
So, 5n + (5 + 2) Ă— (20 - n) = 120
⇒ 5n + 140 - 7n = 120
⇒ 2n = 20
⇒ n = 10
The place where does not have a Stupa is
Which country pioneered the use of zero-based budgeting?
MNREGA programme has been introduced to implement which Article of Indian Constitution?
Unique PRANs are related to which scheme?
“Mukhyamantri Amrutum Yojana” is a health insurance scheme launched by which state?
What is the validity of the NRA CET scorecard?
Largest fresh water lake in ASIA is?
Which financial institution recently received approval from the National Company Law Tribunal (NCLT) for a merger with Northeast Small Finance Bank (NES...
 Nuthalapati Venkata Ramana is the _____ number of Chief Justice of India?
Which type of soil, characterized by its deep red color, is typically found in tropical regions?
Relevant for Exams:
