How much is 8 times 12.5%?

How much is 8 times 12.5%?


8×12.5%=1



(5 / 12 + 1 / 9 + 3 / 8) times 72 equals


(5 / 12 + 1 / 9 + 3 / 8) times 72
=5/12×72+1/9×72+3/8×72
=30+8+27
=65



A times a equals 12.5 to find a (a is two identical numbers)


Since a is two identical numbers,
Let a = 10x + x = 11x,
Then: a * a = 121x ^ 2 = 12.5 = 25 / 2,
It is calculated that: x = ± 5 √ 2 / 22,
Finally: a = 11x = ± 5 √ 2 / 2 = ± 3.535