In a family of six males and a few females, the average monthly consumption of grain per head is 14.4 kg. If the average monthly consumption per head is 20 kg in the case of males and 6 kg in the case of females, find the number of females in the family?

8 4 6 7

4

Let number of females = F ATQ, 6 × 20 + F × 6 = ( 6+F) × 14.4 120 + 6F = 86.4 + 14.4F 8.4F = 33.6 F = 4 so , Number of females are 4