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?

A 5 hours
B 4 1/2 hours
C 2 1/2 hours
D 4 4/9 hours

Correct Answer: 4 4/9 hours

Jamal 1 ঘণ্টায় করে 18 এবং Kamal 1 ঘন্টায় করে 110 of the job (18 + 110) part of the job উভয়ে করে 1 ঘন্টায় so 1 whole part of the job উভয়ে করে (18 + 110) - 1 = 449 ঘন্টা
Bissoy MCQ
#গণিত #ঐকিক নিয়ম (Unitary method) #Prime Bank Ltd #Prime Bank Ltd - Management Trainee Officer - 12.07.2013

Related Questions

Jamal has half the marbles that Malek has. Arif has 3 times as many as Jamal. together they have 72. How many marbles does Jamal have?
A 10
B 12
C 15
D 18
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
Worker A takes 8 hours to do a job . Worker B takes 10 hours to do the same job. How long should it take both A and B, working together but independently , to do the same job?
A 449 days
B 447 days
C 438days
D None of these
Tow workers A and B are engaged to do a work . A working alone takes 8 hours more to complete the job than if both worked together . If B worked along, he would need 4.5 hours more to complete the job than they both working together . What time would they take to do the work together ?
A 4 hours
B 5 hours
C 6 hours
D 7 hours
Kalam loves chocolates. He can eat 32 of them in an hour. His brother Jamal needs 3 hours to eat the same amount. How long will it take them together to eat 32 chocolates?
A 40 mins
B 42.5 mins
C 45 mins
D 45.5 mins
If Kamal gives 20 marbles to Shuvo, then, both of them will have equal numbers of marbles in their possessions. If Shuvo gives 40 marbles to kamal then Kamal will have twice the number of marbles that Shuvo will retain. What is the number of marbles that Kamal has?
A 100
B 160
C 200
D None of these
Jamal, Hasan and Nasrin are interested to take admission in Economics, Nasrin also likes Political Science. Jenin prefers Sociology and Social Welfare. Plash has a dream for Development Studies. Jamal also has a prefers towards Public Administration. Plash has a soft corner towards Journalism, Who has the fewest choices?
A Jamal
B Hasan
C Nasrin
D Palash
Aunik, Kamal and Jamal invested TK. 8000, TK. 4000 and TK. 8000 respectively in a business . Aunik left after six months. If after eight months, there was a gain of TK. 4005, then what will be the share of Kamal ?
A TK. 890
B TK. 1335
C TK. 1602
D TK. 1780
If Mamun were twice as old as he is now, he would be 40 years older than Jamal. If Jamal is 10 years younger than Mamun, how old is Mamun?
A 20
B 30
C 40
D 50
Mr. Jamal employed 50 workers to finish a work within 30 days . After 20 days he found out that only 50% work had been completed. How many additional workers did Mr. Jamal need to finish the work in time?
A 100
B 50
C 40
D 35

Next steps