Question

Find out the population of a town if the ratio between the literate and the illterate of the inhabitant of the town is 2:5the number of illterate exceed the number of literate by 90

Answer 1

$\textbf{ ANSWER: }$

Let the number of literate and illiterates be: 2x and 5x

Also, the total population will be = 2x + 5x = 7x

Then ATQ;

$2x + 90 = 5x \\ = > 90 = 5x - 2x \\ = > 90 = 3x \\ \\ = > x = \frac{90}{3} \\ \\ = > x = 30$

Total population = 7x
Therefore;
7 × 30 = 210 is the population.