Not sure I'm right but:
If the bar weighs 9.25 ounces and 65% of the bar is gold, you'd do 65% of 9.25. So the answer would be <span>65% of 9.25= 6.0125</span>
For this case we must simplify the following expression:

By definition of the law of multiplication signs we have to:

Rewriting the expression we have:

We add similar terms taking into account that:
Equal signs are added and the same sign is placed.

ANswer:

180(4) = 720
110+135+105+ 116+ 108 + x= 720
X= 146
Can you tell me your score? I just want to make sure that I gave you the right answers.