Please answer it fast.....!!!!

Dear student,

As given in the question we have to divide 30 by half
 and then add 10
So as follows;-


$\left(30÷\frac{1}{2}\right) + 10 = \left(30 \times 2\right) + 10 = 60 + 10 = 70$

So the answer is 70.
Hope it helps.
Regards.