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

Which of the following may be allowed in a food preparation area: Smoking, Chewing Gum, Pets, Wearing a Wedding Band
What does it mean when two things have the same rate?
A grinding wheel is a uniform cylinder with a radius of 8.50 cm and a mass of 0.380 kg. Calculate (a) its moment of inertia about its center, and (b) the applie
Cuantos perros ay en el mundo
Weverton Cliffs is a hiking trail in Maryland. This trail is 3 inches long on a map that has a scale of 7 ½ inches = 15 miles. If Sarah hikes Weverton Cliffs fr
Read an integer from the user repeatedly, until the user enters a negative number. use for loop (C programming)​
BA is congruent to BC and DA is congruent to EC. Prove BD is congruent to BE.
miguel le dice a maru que la langosta se ve muy buena.
A. Wealth B. Level of living C. liquidity D. Assets
chứng minh rằng: | arctanx-arctany | <= |x - y|