9 girls working 7 hours a day can complete a piece of work in 15 day. In how many days can 6 girls working for 9 hours a day, complete the same piece of work?
A) 35/4 days
B) 17.5 days
C) 19 3/4 days
D) 37/3 days
Answers
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Answer:
7.7 days
Step-by-step explanation:
This question can be answered using UNITARY METHOD
9 girls =105 hours
1 girl=(105/9) hours
6 girls=105/9 × 6
6 girls=70 hours
6 girls=(70/9)days
6 girls=7.7day
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