Question 1153494

Three times Jack’s age +2 times Jill’s age equals 64. Jack is also two times Jill’s age. how old is Jack?
<pre>Let Jack's age be J, and Jill's L
Then 3J + 2L = 64 ----- eq (i)
Also, J = 2L ----- eq (ii)
3J + J = 64 ----- Substituting 2L for J in eq (i)
4J = 64
J, or {{{highlight_green(matrix(1,6, Jack, is, 64/4, "=", 16, years-old))}}}