Question
A and B can complete a job together in 30 days; B and C
can complete the same job together in 25 days, while C and A can complete the same job together in 10 days. In how many days will A, B, and C be able to complete the same job alongside D, who is only 75% as efficient as C?Solution
A+B= 30 B+C=25 C+A=10days LCM of 30, 25, and 10 = 150 A+B B+C C+A 30 25 10 150 5 6 15 Total 2(A+B+C) = 5+6+15+=26 A+B+C =13 C = 13-5 =8 D= 8×75/100 =6 NOW A+B+C+D = 13+6=19 SO total days = 150/19 =7(17/19) days
Which of the following is not correct about CRD design?
The vector of Corn Stunt Disease is:
What resources is a manger mainly concerned with?
Which microbe is commercially exploited as a biocontrol agent?
Sand is mainly composed of
Which term describes the process where water vapour is released from plant leaves into the atmosphere ?
Green manure crop suitable for alkaline and water logged soil is
Which insect is considered one of the most important disease vectors among humans and why?
Micrografting is primarily used to produce plants free from:
Which mineral is considered as a secondary mineral?
Relevant for Exams:
