Final answer:
To find the number of math problems assigned for homework, set up a proportion using the information given.
Step-by-step explanation:
To find the number of math problems assigned for homework, we can set up a proportion using the information given:
Let x be the total number of math problems assigned.
Since Sydney completed 60% of the problems, she finished 60% of x, which is 0.6x.
She has 4 more problems to finish, so the equation becomes 0.6x + 4 = x.
Now we can solve for x:
0.6x + 4 = x
0.4x = 4
x = 10
Therefore, 10 math problems were assigned for homework.