Let the total number of questions in the math test be defined by the variable x.
Now, we know that Parker correctly answered 35 questions. These 35 questions make 70% of the total number of questions on his math test.
The information we have above can be expressed as an equation given below:
70% of x=35
This can be rewritten as:

Thus, to find the total number of questions we will have to isolate x.

Therefore, there were a total of 50 questions in the math test.
Please insert a picture of the question
Answer:
61.25%
Step-by-step explanation:
How many ml of 20 percent acid should be added to pure acid
to make 70 ml of 30 percent acid?
:
let x = amt of 20% mixture
then
(70-x) = amt of pure acid
:
0.20x + (70-x) =0 .30(70)
0.20x + 70 - x = 21
= 21 - 70
-0.8x =-49
x = 61.25%
x = +61.25 ml of 20% stuff
Percentage of working employees is 55.56
workings:5/9 x100
Answer:
the algebraic expression that represent the quotient of a number & thirty is 30 ÷ a
Step-by-step explanation:
The algebraic expression that represent the quotient of a number & thirty is shown below:
As we know that
Quotient means to divide
So here the quotient is 30
And the other number would be 30 ÷ a
Therefore the algebraic expression that represent the quotient of a number & thirty is 30 ÷ a