If on a test three people answered 90% of the questions correctly and two people answered 80% correctly, then find weighted average?
Weighted Average= $\dfrac{Sum \;of \;Weighted \;Terms}{Total \; Number\; of \;Terms}$
Weighted Average= $\dfrac{3×90+2×80}{5}$
Weighted Average= $\dfrac{430}{5}$
=86
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The average consumption of rice by a family is 45 kgs in three months. If there are 15 members in the family, find the total consumption for three months. |
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Total height of a class is 1500 cm. If the average height of a class is 50 cm, find the number of students in the class. |
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The marks obtained by Sara in the first three Unit Tests in Maths are 85, 89 and 98.Find Sara’s average marks in Maths Unit Tests. |
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John drove for 3 hours at a rate of 50 miles per hour and for 2 hours at 60 miles per hour. What was his average speed for the whole journey? |
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If on a test three people answered 90% of the questions correctly and two people answered 80% correctly, then find weighted average? |
Answer |
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The average consumption of rice by a family is 45 kgs in three months. If there are 15 members in the family, find the total consumption for three months. |
Answer |
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Total height of a class is 1500 cm. If the average height of a class is 50 cm, find the number of students in the class. |
Answer |