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 right
[ C ]    30 days
[ D ]    40 days
[ E ]    None of these
Answer : Option B
Explanation :
500
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