Answer:
2808
Explanation:
If 5 men can earn 315 dollars in a day then each of them can earn 63 dollars per day. If 7 women can earn 315 dollars in a day then each of them can earn 45 dollars per day. 7*63=441 11*45=495
441+495=936 But we aren't done yet! We only calculated the amount of wage 7 men and 11 women can earn in 1 day. So, to find out how much they earned in 3 days we have to multiply by 3
936*3=2808
So the answer is 2808 dollars.