Answer:
x = 7 is your answer.
Step-by-step explanation:
Here is what you do:
<em>x + 16 = 4x - 5</em>
<em>-3x + 16 = -5</em>
<em>-3x = -21</em>
x = 7 is your answer.
So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.
Answer:
600 Grams = 1.323 Pounds
Step-by-step explanation:
1 gram equals 0.0022 pounds
600 x 0.0022 = about 1.323
He made a profit of thirty dollars