20 boys complete a work in 16 days and 25 girls can complete the same work in 18 days. 8 boys and 15 girls started the work together. They worked for some number of days. After they left the work, 48 children joined the work and complete the work in 4 days. If efficiency of 1 boy is double the efficiency of 1 child, how many days they took to complete the whole work?

20 boys complete a work in 16 days and 25 girls can complete the same

1.	20 boys complete a work in 16 days and 25 girls can complete the same work in 18 days. 8 boys and 15 girls started the work together. They worked for some number of days. After they left the work, 48 children joined the work and complete the work in 4 days. If efficiency of 1 boy is double the efficiency of 1 child, how many days they took to complete the whole work?
A.	16
B.	18
C.	20
D.	22
E.	None of these
Answer» B. 18

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