That’s the answer because
Following PEMDAS
1/5*t=1/5t
1/5*2=2/5
So now we have
1/5t+2/5=5/8
To subtract fractions you need a like denominator, and the closest one between 5 and 8 is 40
So we have 16/40 and 25/40
25/40-16/40 is 9/40
So we now have
1/5t=9/40
Now divide
You get 1 and 1/8 or 1.125