A certain number of men typist can type a complete book in five hours less than the time taken by some women typist. Work completed by one man in one hour is same as the work completed by one woman in hour.
`to` Which one of the following ratio of number of men to number of women can satisfy the above given condition
`{:((i),2.5,(ii),10.3),((iii),9.7,(iv),10.7):}`

Options

A. only (ii)
B. only (ii) and (iii)
C. only (i) and (ii)
D. all of the above

Answer

C

Explanation

Let Aham invested for t days
`{:("Rajan ""Gagan ""Ahmad"),(900xx12 :1800xx6:xt):}`
Here, x will depend on t and value of t can be maximum 6 months ans minimum 1 month
On putting t=6
`X=1800`
Putting `t=4`
`x=2700`
Putting `t=2`
`x=5400`