A student missed 8 problems on a Chemistry test and received a grade of 47%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer.
My answer is 15 question were on the test is this correct
A survey of the reading habits of 100 student showed that 30 read both comics and novels , 10 read neither comics nor Novels and as twice as many student read comics as read novels .
To find the number of problems on the test, we can use a proportion:
Let x be the total number of problems on the test.
From the information given, we know that the student missed 8 problems and received a grade of 47%. This means the student answered (100% - 47%) = 53% of the problems correctly.
We can set up the proportion:
(53/100) = (x - 8)/x
To solve the proportion, we can cross-multiply:
53x = 100(x - 8)
Expand the equation:
53x = 100x - 800
Simplify:
47x = 800
Divide both sides by 47:
x ≈ 17.02
Since we are asked to round off the answer to the nearest integer, the number of problems on the test is 17.
Therefore, your answer of 15 questions is not correct.