Question

Pls someone give me the answer

Answer 1

Answer: D. 30

Equation: 4/10 + ?/100 = 7/10

Explanation:
First make sure they all have the same denominators, multiple the first and the sum fraction by 10 to the top and bottom!
You now have 40/100 + ?/100 = 70/100
Now do 70-40 and you get 30 which is ?

Answer 2

30, 4/10 + 30/100, 0.7 or 7/10