Which soap dispenser shows that 64% of its soap has been used?

Dispenser C is your answer

16/25 x 4/4 = 64/100

64/100 = 0.64, or 64% 

Your answer is Dispenser C

hope this helps

The answer of this question is 672 .

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post