Answer:
50
Explanation:
35/n x 100 = 70%
÷100 both sides
35/n = 0.70
x n both sides
35 = 0.70n
÷0.70 both sides
50 = n
Thus, the number you're after is 50
(n is a variable - representing an unknown number or value)
Check:
35/50 x 100 = 70%
Hope this helps!