A pillar of 300 m can be built by 10 men and 6 women in 15 days. How many days will 15 men and 12 women take to build a pillar of 750 m if the efficiency of men and women is same?

A pillar of 300 m can be built by 10 men and 6 women in 15 days. How many days will 15 men and 12 women take to build a pillar of 750 m if the efficiency of men and women is same?

1). 22.2
2). 13
3). 14.5
4). 17.2

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