9men finish job in 15 days, if 3men additional added how many days will take to finish job?
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9 men take 15 days
so if 3 people are joined the total number of people will be 12
9men -----------15 days
12men------------x days
since it is an inverse variation so
9-------x
12-------15
12x=15×9
x=15×9/12
x=11 whole1/4 days
so if 3 people are joined the total number of people will be 12
9men -----------15 days
12men------------x days
since it is an inverse variation so
9-------x
12-------15
12x=15×9
x=15×9/12
x=11 whole1/4 days
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