According to the question, (2 men +7 women )×28 =(6 men +16 women )×11 ⇒56 men +196 women =66 men +176 women ⇒66 men −56 men =196 women −176 women ⇒10 men =20 women ⇒
men
women
=
20
10
=
2
1
Total work =(2m+7w)×28 =(2×2+7×1)×28 =11×28 7 men can complete the work in =