In a city, 40% of the adults are illiterate while 85% of the children are literate. If the ratio of the adults to that of the children is 2:3, then what percent of the population is literate?
A
20%
B
25%
C
50%
D
75%
Correct Answer: 75%
Let, Adult = 100; Children = 150 So Ratio of literate = 60 + 85 × 1.5 or 127.5 Total = 60 + 127.5 = 187.5 In 250, literate = 187.5 So In 100, literate = 187.5×100250 = 75