Question
Karan, Arjun and Krunal alone can complete a work in 40,
60 and 48 days respectively. All of them started working together but after 3 days from start Karan left the job and after 5 more days Arjun also left the job. So for how many days did Krunal work?Solution
Let the total work = 240 units (LCM of 40, 60 and 48) Amount of work done by Karan alone in one day = 240/40 = 6 units Amount of work done by Arjun alone in one day = 240/60 = 4 units Amount of work done by Krunal alone in one day = 240/48 = 5 units Amount of work done by Karan, Arjun and Krunal together in 3 days = 3 × (6 + 4 + 5) = 45 units Amount of work done by Arjun and Krunal together in 5 days = 5 × (4 + 5) = 45 units Remaining work = 240 – 45 – 45 = 150 units So, the time taken by Krunal alone to complete 60 units work = 150/5 = 30 days So, Krunal worked for 30 + 5 + 3 = 38 days
Crop failure due to prolonged dry spells during crop period and less than 75 days of crop growing season are the characteristics of which type of farming?
Objectionable weed in wheat field is _____
According to Law of diminishing return, the optimum profit will be at the point where:
Seed plot technique of potato was developed by
The two most important factors influencing the life span of seeds under storage are:
The branch of biology developed to study chromosomes and its application in genetics is known as:
Dapog Method of rice cultivation is developed from
 Major genes are responsible for
Mean deviation is least when calculated about:
Ballast elements are
Relevant for Exams:
