Salma's average in four tests is 80%. What mark does she need score in her fifth test to make her average 84%?

এ সম্পর্কিত আরো প্রশ্ন দেখুন

• A train passes city X at 8.25 am and city Y at 11.05 am. The distance between city X and Y is 320 miles. What is the average speed in miles per hour of the train?
• The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?
• The of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?
• A motorist travels to a place 150 km away at an average speed of 50 km and returns at 30 km per hour. What is his average speed for the whole journey in km per hour?
• Francis had an average of 75 on her first four Geometry test. After taking the next test her average dropped to 72. How much did she get in fifth test?

Subject

গণিত

Topic

Statistics and Average

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