2/5 of the total population of a village are children. 5/8 of the remaining are women and the rest are men.If there are 90 men in the village, calculate: total population, number of children, number of women

Answer 1

Let the total be x
children = (2/5)x
women = (5/8)(3/5)x = (3/8)x

children + women + men = total
(2/5)x + (3/8)x + 90 = x
multiply each term by 40
16x + 15x + 3600 = 40x

continue ....