Question 1064551
Issac is 78 years younger than Tatiana. 8 years ago Tatiana was 4 times Issac's  age. how old is Issac now
<pre>Let Isaac's (I'll use Isaac) age be I
Then Tatiana's is: I + 78
We then get the following AGE equation for Isaac: I + 78 - 8 = 4(I - 8)
I + 70 = 4I - 32
I - 4I = - 32 - 70
- 3I = - 102
I, or Isaac is: {{{highlight_green(matrix(1,4, (- 102)/(- 3), or, 34, years-old))}}}