Question

40% students in a school are more than 12 years of age while 90% of the students are below or equal to 15 years. 30% of the total students speak english. 30% of the students above the age of 15 speak English. Students below or equal to the age of 15 years who speak English is what % of the total students speaking English.

Answer 1

the equation (l-m/2)x^2 -(l+m/2)x +m =0 got two values of x to satisfy the equation given as