Question
'Amit' and 'Bittu' alone can do some work in 24 hours
and 20 hours, respectively. 'Amit' and 'Charu' together can do 60% of the work in __ hours. 'Bittu' and 'Charu' on the other hand, can do the entire work together in __ hours. The values given in which of the following options will fill the blanks in the same order in which is it given to make the statement true: I. (72/13), (60/7) II. 7.2, 9 III. 8, 12ÂSolution
ATQ, Let the total work be 120 units. (LCM 24 and 20) So, efficiency of 'Amit' = (120/24) = 5 units/hour And efficiency of 'Bittu' = (120/20) = 6 units/hour For Statement I: Combined efficiency of 'Amit' and 'Charu' = {(120 X 0.6)/72} X 13 = 13 units/hour So, efficiency of 'Charu' = 13 - 5 = 8 units/hour So, time taken by 'Bittu' and 'Charu' to finish the whole work together = {(120)/(8 + 6)} = (60/7) hours So, statement I is true. For Statement II: Combined efficiency of 'Amit' and 'Charu' = {(120 X 0.6)/7.2} = 10 units/hour So, efficiency of 'Charu' = 10 - 5 = 5 units/hour So, time taken by 'Bittu' and 'Charu' to finish the whole work together = {(120)/(5 + 6)} = (120/11) hours So, statement II is false. For Statement III: Combined efficiency of 'Amit' and 'Charu' = {(120 X 0.6)/8} = 9 units/hour So, efficiency of 'Charu' = 9 - 5 = 4 units/hour So, time taken by 'Bittu' and 'Charu' to finish the whole work together = {(120)/(4 + 6)} = 12 hours So, statement III is true.
 What is the maximum number of partners allowed in a Limited Liability Partnership (LLP) in India?
Current Assets (at cost) Rs.24,00,000, Credit Sales Rs. 68,00,000, Cash Sales Rs.600,000, Sales Return Rs.2,00,000. What can be Current Assets Turnover ...
Consider the following statement:
I. Highest surcharge rate on income above 5 crore to be reduced from 37% to 30% under new regime
II. E...
Once the project is approved and moves into the planning stage, what happens in the next phase of the project life cycle?
Consider the following Statements and choose the option with correct Statements.
I- Jal Jeevan Mission was launched in 2019 as a Central Sector ...
The acronym 'STP' stands for which of the following in the context of mutual fund investments?
What advantage do niche financial centers have over larger centers?
With project cost of Rs.300 lakh and cost of capital at 12%, the estimated profits over its lifetime of 5 years are Rs.10 lakh, Rs.10 lakh, Rs.30 lakh, ...
Which insurtech startup has entered into a strategic partnership with the Life Insurance Corporation of India (LIC) through which the latter’s produc...
 In the context of cost accounting, expenses are classified into different categories based on their function within the business operations. Based on ...
Relevant for Exams:
