Question
'Ankit' can complete some work alone in 35 days. 'Amit'
is twice as efficient as 'Sumit' and four times as efficient as 'Ankit'. If 'Ankit' and 'Sumit' start working together, then after how many days should 'Amit' replace them so that the work gets completed in exactly 12 days?Solution
ATQ, Let the total work be 140 units. Efficiency of 'Ankit' = 140 ÷ 35 = 4 units/day Efficiency of 'Amit' = 4 X 4 = 16 units/day Efficiency of 'Sumit' = 16 ÷ 2 = 8 units/day Let the number of days for which 'Amit' worked alone be 'd'. So, (d X 16) + (12 - d) X (4 + 8) = 140 Or, 16d + 144 - 12d = 140 Or, 'd' = 2 So, 'Amit' worked alone for 2 days 'Amit' should've joined them after (12 - 2) = 10 days
Which report indicates that India’s CO₂ emissions will increase by 4.6% in 2024?
Recently the Vice President of India leads delegation at the 19th ASEAN-India Summit in which of the following country?
The Insurance Regulatory and Development Authority of India (IRDAI) has increased the limit on losses for the appointment of Surveyors and Loss Assessor...
How many Bima Sakhis were active across India as of the current financial year?
India recently surpassed Hong Kong in the global stock market rankings. What factors contributed to India's success in the stock market?
The World Bank's International Bank for Reconstruction and Development (IBRD) priced a 5-year Great British Pound sterling (GBP) benchmark bond. What is...
Which two Chief Ministers inaugurated the Sidheshwari Temple in Tripura?
The PFRDA has said that uploading certain documents will be mandatory from ______for NPS subscribers who want to exit and get timely annuity payments.
World Science Day for Peace and Development is observed every year on?
With reference to the Blue economy, consider the following statements:
1. Blue economy refers to the sustainable use of marine resources for expl...
