Question
‘A’ alone can complete a work in 45 days while
‘A’ and ‘B’ together can complete the same work in 35 days. How much percentage of the work, ‘B’ alone can complete in 63 days?Solution
Let the total work = L.C.M of 45 and 35 = 315 units Then, efficiency of ‘A’ alone = 315 ÷ 45 = 7 units/day Combined efficiency of ‘A’ and ‘B’ = 315 ÷ 35 = 9 units/day So, efficiency of ‘B’ = 9 – 7 = 2 units/day So, work done by ‘B’ alone in 63 days = 2 × 63 = 126 units So, percentage of work completed by ‘B’ = (126 ÷ 315) × 100 = 40%
Initial symptom appears in …………………….. months old crop as thin papery white young leaves at the top of the cane in grassy shoot diseas...
What are the primary fruiting bodies formed in the sexual reproduction of fungi?
The relationship between two organisms, where both of them benefit from each other is called:
Which disease in Bengal Gram displays round or elongated lesions on leaflets with brown spots, surrounded by a brown margin, and pycnidia arranged in co...
Mangla, Sumangla , Sreemangla are the popular varieties of which of the following crops?
Which disease of brinjal is caused by a Phytoplasma and is characterized by the reduction in leaf size, shortened petioles, and stunted, bushy appearanc...
In plant pathology, what are "symptoms" referring to?
Sesame Phyllody disease caused by______
Which method of plant disease management involves eliminating or inactivating disease organisms after their establishment?
Disease that occurs irregularly and in relatively few instances, and may be endemic in one region and epidemic in another?
