Question 1066462

Katty is one fifth as old as Melinda. In four years three times Katty's age will equal Melinda's age. Find Melinda's age now.
<pre>Let Melinda's age, be M	
Then Katty's is: {{{matrix(1,3, (1/5) * M, or, M/5)}}}
We then get: {{{3(M/5 + 4) = M}}}	
{{{3M/5 + 12 = M}}}	
3M + 60 = 5M ------ Multiplying by LCD, 5	
60 = 5M - 3M	
M, or Melinda is: {{{highlight_green(matrix(1,4, 60/2, or, 30, years-old))}}}
This is based on: "In four years three times Katty's age will equal Melinda's" <b><u>CURRENT age</b></u>
If it's, "In four years three times Katty's age will equal Melinda's" <b><u>AGE THEN</b></u>, then Melinda is now 20 years-old.