Subject
Bank Exam
Topic
Prime Bank Ltd. MTO 2013
Jamal needs 8 hours to do a job. Kamal takes 10 hours to do the same job. How long should it take Kamal & Jamal working together to do the job?
Jamal needs 8 hours to do a job. Kamal takes 10 hours to do the same job. How long should it take Kamal & Jamal working together to do the job?
ক)
5 hoursখ)
41/2 hoursগ)
21/2 hoursঘ)
44/9 hoursExplanation
In 8 hours, Jamal does 1 job In 1 hour, Jamal does 1/8 job Again, In 10 hours, Kamal does 1 job In 1 hour, Kamal does 1/10 job. Now, In 1 hour, together they will do (1/8 + 1/10) job = 18 / 80 job = 9/40 job Thus Together, They do 9/40 job in 1 hour They do 1 job in 40/9 hours &nbRelated questions
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