Question

3man 4 women in 7 day paid on 3780 and 11 man 13 women in 8days paid on 15040 in which days paid on 12400 on 7 man and 9 women

Answer 1

let,men be x and
women be y
3x+4y=3780/7
3x+4y=540
x=(540-4y)/3
11x+13y=1880
11(540-44y)/3+13y=1880
(5940-44y+39y)/3=1880
5940-5y=5640
5y=5940-5640
5y=300
y=60
x=(540-4y)/3
x=(540-240)/3
x=300/3
x=100
let days be z
7x+9y=12400/z
700+540=12400/z
1240=12400/z
z=12400/1240
z=10
for 10 days 12400 for 7 man and 9 woman paid