Question 1143420

Darius is 87 years younger than jack. 11 years ago, jacks age was 4 times Darius’s age. How old is Darius now? X= current age of Darius. the equation should contain 87,11, & 4.
I tried solving it this way (x-11)=4(x-87-11) but it’s not adding up right 
<pre>With X being Darius' age, Jack is X + 87
We then get: X + 87 - 11 = 4(X - 11) <====== CONTAINS 87, 11, and 4
X + 76 = 4X - 44
X - 4X = - 44 - 76
- 3X = - 120
X, or {{{highlight_green(matrix(1,6, "Darius'", age, "=", (- 120)/(- 3), "=", 40))}}}