(i don't know how to upload the map so sorry for no map)
which achievement of the league of nations does this map illustrate?
a. the pledge of nations to join the league of nations after 1921
b. the settlement of border disputes between member nations
c. the settlement of disarmament terms between members
d. the creation of mandates to manage certain territories

D. the creation of mandates to manage certain territories

d. the creation of mandates to manage certain territories

164 kids

165 adults

step-by-step explanation:

first you need to make two equations

kids = x

adults = y

first equation = x+y=329

second equation = 1.5x + 4y = 906

solve by substitution

x = 329 - y

1.5 (329 - y) + 4 y = 906

493.5 - 1.5y + 4y = 906

combine like terms

2.5y = 412.5

y = 165

plug back into one of the equations

x + 165 = 329

x = 164