j = 4l
(j - 9) + ( l - 9) = 47
Now, substitute.
(4l - 9) + (l - 9) = 47
4l - 9 + l - 9 = 47
5l - 18 = 47
5l = 65
l = 13
j = 4(13) = 52
Jack is 52 and Lacy is 13.
Humberto H.
asked • 10/30/17Jack is 4 times as old as Lacy. 9 years ago the sum of their ages was 47. How old are they now?
I've been stuck on this question for about 30 minutes, I don't get it. Can anyone help?
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