# Average

If the average(arithmetic mean) of three numbers x,y,z is 50. What is the average of there numbers (3x +10), (3y +10), (3z+10) ?

Result

x =  160

#### Solution:

$x=3 \cdot \ 50+10=160$

Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

Tips to related online calculators
Looking for help with calculating arithmetic mean?
Looking for a statistical calculator?

#### 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:

## Next similar math problems:

1. Harmonic and arithmetic means
The local Utah Department of Child Service office wants to project staffing needs based on current social worker assignments. They have the number of cases per social worker for the following staff: Mary: 25 John: 35 Ted: 15 Lisa: 45 Anna: 20 Calcula
2. AP - simple
Determine the first nine elements of sequence if a10 = -1 and d = 4
3. Sequence 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1
4. Sequence
Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
5. Median and modus
Radka made 50 throws with a dice. The table saw fit individual dice's wall frequency: Wall Number: 1 2 3 4 5 6 frequency: 8 7 5 11 6 13 Calculate the modus and median of the wall numbers that Radka fell.
6. Life expectancy
The life expectancy of batteries has a normal distribution with a mean of 350 minutes and standard deviation of 10 minutes. What the range in minutes 68% of the batteries will last? What is the range in minutes approximately 99.7% of batteries will last?
7. 75th percentile (quartille Q3)
Find 75th percentile for 30,42,42,46,46,46,50,50,54
8. Centre of mass
The vertices of triangle ABC are from the line p distances 3 cm, 4 cm and 8 cm. Calculate distance from the center of gravity of the triangle to line p.
9. Three workshops
There are 2743 people working in three workshops. In the second workshop works 140 people more than in the first and in third works 4.2 times more than the second one. How many people work in each workshop?
10. Today in school
There are 9 girls and 11 boys in the class today. What is the probability that Suzan will go to the board today?
11. Chords
How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
12. Teams
How many ways can divide 16 players into two teams of 8 member?
13. Examination
The class is 21 students. How many ways can choose two to examination?
14. Legs
Cancer has 5 pairs of legs. The insect has 6 legs. 60 animals have a total of 500 legs. How much more are cancers than insects?
15. Reference angle
Find the reference angle of each angle:
16. Elimination method
Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15
17. Line
It is true that the lines that do not intersect are parallel?