On Tuesday, 30 of the students in a class took a test and their average score was 83.5. On Thursday , the other 5 students took the test, and their average score was 94. what was the average for the entire class?

83.5%

84.5%

85%

88.2%

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

ব্যাখ্যা ও সঠিক সমাধান

উত্তর: 85%

Average = 30×83·5 + 5×9430 + 5 = 2505 + 47035 = 85 = 85%

বিস্তারিত সমাধান