Related Questions

If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
Choose the appropriate tag: For the boys , the task was quite casy, ______ ?
A weren't they
B didn't they
C wasn't it
D isn't it
For the boys the task was easy.
A weren.t they?
B didn't they?
C isn't it?
D wasn't it?
Rakib can complete a task in 30 minutes, and together with his brother Momin, he can complete the task in 20 minutes. How long would it take for Momin working alone to complete the task?
A 30 minutes
B 40 minutes
C 50 minutes
D 60 minutes
If 12 man work on a particular task. It takes them 24 days to complex it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each othre to finish the same task?
A 5 days
B 6days
C 8 days
D 16 days
A and B can complete a task in 12 days. However, A had to leave a few days before the task was completed and hence it took 16 days in all to complete the task. If A alone could complete the work in 21 days, how many days before the work getting over did A leave?
A 7
B 5
C 9
D 3
A can complete a task alone in 8 days, while B takes 12 days to do it by herself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by herself?
A 36
B 32
C 40
D 30
In a school, the ratio of boys to girls is 3 to 7. if there are 150 boys and girls in the school, how many boys are there?
A 45
B 75
C 90
D 105
The ratio of boys and girls in a class 1 : 2 and the classroom has 24 students. How many boys would have to be admitted to make the ratio of boys to girls 1 : 1?
A 6
B 8
C 10
D 12
The ratio of boys and girls in a class is 1 : 2 and the classroom has 24 students. How many boys would have to be admitted to make ratio of boys to girls 1 : 1?
A 6
B 8
C 10
D 12

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