Correct Answer - B
(i) The ratio of efficinecy of Anand, Rajue Suresh and Vankat is `1:3:4:6`
(ii) Let the efficinency of Suresh be x.
`:.` Efficiency of Anand= `(x)/(4)`
Efficicy of Raju =`(3x)/(2)`
Efficiency of Raju `=(3x)/(4)`
(iii) Now find the ratio of effiecies of Ananad, Raju Suresh and the then divide 392 in the same ratio
(iv) Now, find the number of pieces produced by Raju in 8 hours, by using the number of pieces produced by Raju in 6 hours