Mathematicians 11761
The top five mathematicians in the class took on the help of the teacher in calculating the average grade from the paper. They dictated the following results:
Mischa: "I came up with 3.30. "
Dasha: "That's weird, because it worked out exactly 3.45. "
Jana: "You probably can't count, because I think it's 2.94. And I also didn't round. "
Roman: "I checked it three times and I got 3.44. Damian: "Interesting, I only got 2.60. "
30 students wrote, no one received a five and only two students received a four. One of the results was correct. Who dictated the right result?
Result
Mischa: "I came up with 3.30. "
Dasha: "That's weird, because it worked out exactly 3.45. "
Jana: "You probably can't count, because I think it's 2.94. And I also didn't round. "
Roman: "I checked it three times and I got 3.44. Damian: "Interesting, I only got 2.60. "
30 students wrote, no one received a five and only two students received a four. One of the results was correct. Who dictated the right result?
Result
Tips for related online calculators
Looking for help with calculating arithmetic mean?
Looking for a statistical calculator?
Do you solve Diofant problems and looking for a calculator of Diofant integer equations?
Looking for a statistical calculator?
Do you solve Diofant problems and looking for a calculator of Diofant integer equations?
You need to know the following knowledge to solve this word math problem:
We encourage you to watch this tutorial video on this math problem: video1
Related math problems and questions:
- Six questions test
There are six questions in the test. There are three answers to each - only one is correct. To take the exam, students must answer at least four questions correctly. Alan didn't learn, so he circled the answers only by guessing. What is the probability th - MIT 1869
You know the length of hypotenuse parts 9 and 16, at which the hypotenuse of a right triangle is divided by a perpendicular running from its opposite vertex. The task is to find the lengths of the sides of the triangle and the length of the line x. This a - Peter's calculation
Peter wrote the following: 7 1/4 - 3 3/4 = 4 2/4 = 4 1/2 . Is Peter's calculation correct? Using words (math vocabulary) and numbers to explain why he is correct or incorrect. - Salami
We have six kinds of salami that have ten pieces and one kind of salami that has 4 pieces. How many ways can we choose five pieces of salami in a distinct way? - Self-counting machine
The self-counting machine works exactly like a calculator. The innkeeper wanted to add several three-digit natural numbers on his own. On the first attempt, he got the result in 2224. To check, he added these numbers again and he got 2198. Therefore, he a - Exam average
The average of marks that have on the certificates students of 8A class in mathematics is exactly 2.45. If we did not add 1 and 3 of students Michael and Alena, who arrived a month ago, it would average exactly 2.5. Determine how many students have class - Chickens and rabbits
In the yard were chickens and rabbits. Together they had 19 heads and 48 legs. How many chickens and how many rabbits were in the yard? - Arbitrary 69194
There are ten arbitrary points in the plane. How many circles can we make from them? - Quarantine cupcakes
Mr. Honse was baking quarantine cupcakes. Mrs. Carr made twice as many as Mr. Honse. Ms. Sanchez made 12 cupcakes, more than Mr. Honse. If they put all their cupcakes together (which they can't because. .. quarantine!), they would have 108 cupcakes. How m - A professor
A professor in a typing class found out that the average performance of an expert typist is 85 words per minute. A random sample of 16 students took the typing test and an average speed of 62 words per minute was obtained with a standard deviation of 8. C - Students 34
Students conducted a a survey as part of a Statistics project to determine if younger adults are more likely to have tattoos. The results are listed in the two-way table below: age; At least 1 tattoo; No tattoo; Row totals Age 18 - 29; 165 ; 342; 507 - Two methods
A teacher wishes two methods of teaching verbs to his English class. He divided the class randomly into two samples of 14 students each. Using Method 1, the students learned an average of 43.8 with a standard deviation of 4.6, while the second group (Meth - Fifteen
Fifteen students had an average age of 12 years. When the class teacher came to see them, their average increased by exactly one year. How old was the teacher? - Tangent 3
In a circle with centre O radius is 4√5 cm. EC is the tangent to the circle at point D. Segment AB IS THE DIAMETER of given circle. POINT A is joined with POINT E and POINT B is joined with POINT C. Find DC if BC IS 8cm. - Win in raffle
The raffle tickets were sold 200, 5 of which were winning. What is the probability that Peter, who bought one ticket will win? - Drunk and alcohol
One drunk measured 2.7 ‰ alcohol in the blood, another 1.75 ‰. How many grams of alcohol in the blood they had if they has 6 kg of blood? - Image reduction
To say that I am mathematically challenged is a gross understatement! I'm trying to help my friend determine how to calculate percentages of reduction or enlargement for a quilt pattern. She is creating a drawing of a cute picture that will become a piece
