londahbbupza londahbbupza

02-10-2016
Mathematics

contestada

rob is 5 years older than john,mark is twice as old as john the total of their ages is 65

Respuesta :

SamreenAmdani SamreenAmdani

02-10-2016

John is 15
Rob is 20
Mark is 30

x = John's age
x + 5 = Rob's age
2x = Mark's age

x + x + 5 + 2x = 65
4x + 5 = 65
-5 -5
4x = 60
/4 /4
x = 15
15 + 5 = 20
2(15) = 30

Answer Link

Otras preguntas

Was reconstruction a success or failure? Why or why not?

US History Problem for 20 points!!

The first two political parties in the U.S. Were the Federalists and the Jeffersonian Republicans. Which of these examples were Federalist policies that the Jef

What needs to happen for a solute to dissolve in a particular solvent? A. The attractions between the solute and solvent molecules must be greater than the at

Help Hurry Please!!!!!!!!!

name two angles ajacent to <BAF

100 points! Compare and contrast U.S. attitudes and actions toward the Native Americans and U.S. actions in foreign affairs. IF THE QUESTION IS NOT ANSWERED FUL

What would you use to measure the height of your house? Explain your answer.

In Act II of Julius Caesar, which character says, “To mask thy monstrous visage? Seek none, conspiracy. Hide it in smilies and affability.” A. Antony B. Cassi

Create the electron configuration of Fluorine, atomic number 9.