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
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
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
Four men and 6 women finish a job in 8 days. while 3 men and 7 women finish it in 10 days. while 3 men and 7 women finish it in 10 days. In how many days will 10 women take to finish the work together?
A 32
B 36
C 40
D None
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
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
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and $$\varphi $$ = Pressure angle)
A $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\cos \varphi }}{2}$$
B $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\sin \varphi }}{2}$$
C $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\cos \varphi }}{2}$$
D $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\sin \varphi }}{2}$$
Two men and three women can repair a bridge in 10 days while three men and two women can to same work in 8 days. If two men and one woman are used to finish this work , in how many days they will complete it?
A 15.0 days
B 13.5 days
C 11.0 days
D 12.5 days
Differences in the way men and women process language are of special interest to brain researchers. It is known that 'aphasia' , a kind of speech disorder , is more common in men than in women when the left side of the brain is damaged in an accident or after a stroke. However , women are more likely than men to suffer 'aphasia' when the front part of the brain is damaged . The idea implied in the above passage is -
A Brain damaged can be caused by an accident
B Brains of men and women are organized differently in the way they process speech
C Both sides of the brain are responsible for speech organization
D Brain researchers are locked in argument over the process of language development

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