A city has a population of 300000 out of which 180000 are males. 50% of the population is literate. If 70% of the males are literate, then the percentage of female who are literate is :

Answer: Option A

Number of males = 180000
Number of females :
= (300000 - 180000)
= 120000
Number of literates :
= 50% of 300000
= 150000
Number of literate males :
= 70% of 180000
= 126000
Number of literate females :
= (150000 - 126000)
= 24000
∴ Required percentage :
= $$\left(\frac{24000}{120000}\times 100\right)\%$$
= 20%