Respuesta :

Hey there! :D

Find 10% of 85.

10%=.10

85*.10= 8.5

Add that to 85.

85+8.5= 93.5 

We could also see if this 10% error is in the other direction. 

85-8.5= 76.5 <== this is not an answer choice

So, we know it must be "A" 93.5 C

I hope this helps!
~kaikers