taviabedonie101 taviabedonie101
  • 02-10-2018
  • Mathematics
contestada

Janet is 3 yrs older than her sister julie. Janet brother is eight yrs younger than their sister julie. The sum of all their ages is 55 yrs

Respuesta :

tramserran
tramserran tramserran
  • 02-10-2018

Janet: x + 3

Julie: x

brother: x - 8

Janet + Julie + brother = sum

x + 3  +   x     +   x - 8    =  55

3x - 5 = 55

    +5   +5

3x      = 60

[tex]\frac{3x}{3} = \frac{60}{3}[/tex]

x = 20

Janet: x + 3   ⇒   (20) + 3   = 23

brother: x - 8   ⇒   (20) - 8   = 12

Answer: Janet=23, Julie=20, brother=12

Answer Link

Otras preguntas

suppose y varies directly as x. if x=7 when y=21, find x when y=30
Use the background information and diagram to answer the question: Which of the following are producers? 1Grass 2Algae 3Cyanobacteria 4Plankton
—— are good conduct they constitute permissible behavior
After reading “Bridge to Terebithia” what did you enjoy most
What should be the overall length of a typical cover letter O A. OB. O C. O D. one paragraph two pages five pages less than a page
Identify the mixed number that is equivalent to four and three-fifths
Which of these fats would be the BEST choice to add to her diet?
if buying rate and Selling rate of US dollar is RS 130.94 and Rs 131.54. Rajendra Bought some US dollar and sold them after the devaluation of Nepali money by 1
City A has a current population of 156289 residents and has an annual growth of 146 residents. City B has a current population of 151293 and has an annual growt
Writing a story with proper sequence and organization is important because