Answered

Sumali sa IDNStudy.com at makuha ang mga sagot ng eksperto. Magtanong ng anumang bagay at makatanggap ng agarang tugon mula sa aming dedikadong komunidad ng mga eksperto.

Matt is now 3 years younger than his brother Pete. Four years ago, Matt's age was half of Pete's age. How old is each one now?

Sagot :

let x = Matt's age now
  x + 3 =  Pete's age
thus
 x-4 =( x + 3)/2              4years ago Matt was half of Pete age
2x-8 = x+3    / .2
x = 11years which is Matt age
Pete age =  11 + 3  = 14 years