Start learning 50% faster. Sign in now
ATQ, Time taken by ‘Bhanu’ alone to complete the work = 15 × 4 = 60 days Solving the question by options, For I: Time taken by ‘Asmita’ and ‘Bhanu’ together to complete the work = 48 days Let the total amount of the work = 240 units (LCM of 48 and 60) The efficiency of ‘Bhanu’ = 240/60 = 4 units/day The efficiency of ‘Asmita’ and ‘B’ together = 240/48 = 5 units/day The efficiency of ‘Asmita’ = 5 – 4 = 1 unit/day The efficiency of ‘Sam’ = 1 × 1.5 = 1.5 units/day Time taken by Sam to complete the work = 240/1.5 = 160 days Time taken by Sam to complete 60% of the work = 160 × 0.6 = 96 days Therefore, ‘I’ is true. For II: Time taken by ‘Asmita’ and ‘Bhanu’ together to complete the work = 40 days Let the total amount of the work = 120 units (LCM of 40 and 30) The efficiency of ‘Bhanu’ = 120/60 = 2 units/day The efficiency of ‘Asmita’ and ‘B’ together = 120/40 = 3 units/day The efficiency of ‘Asmita’ = 3 – 2 = 1 unit/day The efficiency of ‘Sam’ = 1 × 1.5 = 1.5 units/day Time taken by ‘Sam’ to complete the work = 120/1.5 = 80 days Time taken by ‘Sam’ to complete 60% of the work = 80 × 60% = 48 days Therefore, ‘II’ is false. For III: Time taken by ‘Asmita’ and ‘Bhanu’ together to complete the work = 30 days Let the total amount of the work = 60 units (LCM of 30 and 20) The efficiency of ‘Bhanu’ = 60/60 = 1 unit/day The efficiency of ‘Asmita’ and ‘B’ together = 60/30 = 2 units/day The efficiency of ‘Asmita’ = 2 – 1 = 1 unit/day The efficiency of ‘Sam’ = 1 × 1.5 = 1.5 units/day Time taken by ‘Sam’ to complete the work = 60/1.5 = 40 days Time taken by Sam to complete 60% of the work = 40 × 60% = 24 days Therefore, 'Ill' is true.
Instrument used for measuring Relative humidity accurately in the crop canopy:
Imezathapyr is a POST emergence herbicide for:
In which group of insects is the concept of physogastry observed, leading to the gradual swelling of the abdomen?
Constraints in the adoption of INM
Aridity index indicates
An example for monoecious nature is
"Food" means any substance that is:
Which of the following represents an imperfect market?
Which of the following statements is not correct regarding ionic bond?
Which city of Haryana is known as .City of Weavers?