# A, B and C working together completed a job in 10 days. However, C only worked for the first three days when $3 \over 100$ of the job was done. Also, the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work ?

 [ A ]    25 days [ B ]    20 days [ C ]    30 days [ D ]    40 days [ E ]    None of these
 Answer : Option B Explanation :