Verified Answer :

70% of x=35
70/100 x=35
x=35100/70=50

"70% = 0.7 OR 7/10

7/10 x = 35    | =multiplication
7/10 10/7  x = 35/1 10/7         7/10 10/7 => 1
1x = 35/1 10 / 7
x = (3510)/7
x = 350 / 7
x = 50"

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