w0lfpack391653 w0lfpack391653
  • 23-12-2020
  • Mathematics
contestada

the mean (average) of three boys is 40 pounds. one of the boyd weighs 50 pounds. the other two boys have the same weight. find weight of each of the boys

Respuesta :

vialia
vialia vialia
  • 23-12-2020

Answer:

35, 35, and 50

Step-by-step explanation:

50 + x + x = n

n ÷ 3 = 40

n = 40 x 3

n = 120

50 + 2x = n

50 + 2x = 120

2x = 120 - 50

2x = 70

2x/2 = 70/2

x = 35

To check:

35 + 35 + 50 = 120

120 ÷ 3 = 40

Hope this helps

Answer Link
tashfia04ts tashfia04ts
  • 23-12-2020

Answer:

35

Step-by-step explanation:

let us take each boy's weight as x

therefore,

average = [tex]\frac{x+x+50}{3\\}[/tex]

40 = [tex]\frac{x+x+50}{3\\}[/tex]

40 x 3 = x + x + 50

120 - 50 = 2x

70 = 2x

2x = 70

x = [tex]\frac{70}{2}[/tex]

x = 35

So weight of each boys is 35.

Answer Link

Otras preguntas

What policy encouraged the growth of american influence without the use of military power?
How many molecules (not moles) of nh3 are produced from 7.26×10−4 g of h2?
In which category do commodities belong ?
Does anybody know about the Middle Ages and The Crusades?
What is the most common resources extracted from the ocean?
A patient is brought to the emergency department. he is restless, has dilated pupils, is sweating, has a runny nose and tearing eyes, and complains of muscle an
The cranial nerve that carries visual impulses from the retina to the brain is the
10/3 (K/L)^1/3 / 5K^(1/3) L-1/3
What information is included on a works cited page? the books that you recorded during your first source search the periodicals that you used in your research p
Beth poured the same amount of juice into 10 glasses.She used 2 quarts of juice.How much juice is in each glass