hdfysdjsfu1235 hdfysdjsfu1235

02-06-2018
Mathematics

contestada

One year ago liz was three times as old as her brother jack. in two years she'll be only twice as old as jack. how old are liz and jack now?

Respuesta :

a3541649783 a3541649783

02-06-2018

now she is x,one year ago,she is x-1,he is 1/3(x-1),in two years,she is x+2,he is 1/2(x+2)
we can get
1/3(x-1)+3=1/2(x+2)
x=10

Answer Link

Otras preguntas

How were the Greek gods different from the gods of most other ancient cultures?

What is 2(5-n) in a word phrase

If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1 liter of water = 55.5 moles of H2O), how many moles of hydrogen, carbon, o

The intersection of a row and a column is referred to as a _____. cell style header row banded row

evaluate the limit as t approaches inifinity of [tex] \lim_{t \to \infty} \frac{ \sqrt{t}+ t^{2} }{8t- t^{2} } [/tex]

Suppose the auction house from the preceding problem sold 200 tickets at $1 each, and had 16 prizes of $10 each. What is the new expected value? A) $0 B) $0.2 C

Btw there was not a Science category so I picked Biology. As a seedling's roots begin to grow into the mud, they displace the soil particles, which are moved

In the following sentence, which word is the adverb? The game was nearly over.

Where does a median drawn from a vertex of a triangle intersect

According to Molly Ivins, enjoying your work is important because _____. A.)if you don't enjoy what you do you will become tired, cynical, and burned out B.)yo