Question
Maria is three times as old as her brother.In 4 years,Maria will be twice as old as he will be then.How old is Maria's brother now?
Answers
Vic
Help need equation
PsyDAG
Let x = maria's age and y = her brother's.
x = 3y
(x+4) = 2(y+4)
Substitute 3y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.
x = 3y
(x+4) = 2(y+4)
Substitute 3y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.
Dwinson
6=24
Dwinson
y=4
x=12
x=12
Bob
Lindana
Nikhath
Waste quedtion