Anne can do a piece of work in 2 days and Emma alone can do it in 5 days. How much time will both take to finish the work ?  Choose the most appropriate option.
A) A)5	B) B)6.56	C) C)1.42	D) D)8.333	E) E)9.3333
This question can be solved by different methods. We need to conserve time in exams so solving this problem using equations is the good idea.   Time taken to finish the job = XY / (X + Y)   = 2 x 5 / (2 + 5)   = 10 / 7   = 1.42 days   Answer: 1.42
<result>C</result>
Anne can do a piece of work in 2 days and Emma alone can do it in 5 days. How much time will both take to finish the work ?