Question
‘X’ and ‘Y’ are capable of finishing a work in 9
days and 12 days respectively. They worked together for 3 days. Find the number of days ‘Y’ alone would take to complete the leftover work.Solution
ATQ,
Let the total work be 36 units (LCM of 9 and 12)
Efficiency of ‘X’ = 36 ÷ 9 = 4 units/day
Efficiency of ‘Y’ = 36 ÷ 12 = 3 units/day
Work done by ‘X’ and ‘Y’ together in 3 days = 3 × (4 + 3) = 21 units
Remaining work = 36 – 21 = 15 units
Time taken by ‘Y’ to finish the remaining work = 15 ÷ 3 = 5 days
What is the revised growth forecast for India in FY 2025–26 as per the World Bank's June 2025 report?
The Insurance Regulatory and Development Authority of India (IRDAI) has increased the limit on losses for the appointment of Surveyors and Loss Assessor...
What is a key feature of the Punjab Udyog Kranti programme to streamline industrial approvals?
Which institution became the first government medical college in India to train on the da Vinci Surgical Robot?
Who has been longlisted for the prestigious Baillie Gifford Prize for Non-Fiction for their book 'The Song of the Cell: An Exploration of Medicine and t...
Yudh Abhyas is a military exercise between India and which country?
Identify the correct statement:
1. CSIR operates under the Union Ministry of Science and Technology.
2. The President of CSIR is the Prime...
What is the name of the new lichen species discovered in the Western Ghats by Indian scientists?
Which city was ranked at top in NITI Aayog’s SDG Urban Index?
Which type of feedstock is being considered in Uttar Pradesh for producing Sustainable Aviation Fuel (SAF)?
Relevant for Exams:
