In a class, 120 students are male and 100 students are female , 25% of the male students and 20% of the female students are engineering students . 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam ?

107. বিদ্যুৎ শক্তিকে শব্দ শক্তিতে রুপান্তরিত করা হয় কোন যন্ত্রের মাধ্যমে - Loudspeaker