Question

Your next math test is worth 111 points and contains 32 problems. Each problem is worth either 4 points or 3 points. How many 3 point problems are on the test?
A)
14
B)
15
C)
17
D)
18

Answer 1

17

Answer 2

let number of 3 point problems be x and number of 4 point be y
you can form two equations in x and y to be solved

Answer 3

Let A be the number of 4 point problems and B be the number of 3 point problems.
1.A%2BB=32
2.4A%2B3B=111
Use eq. 1 to solve for A.
A%2BB=32
A=32-B

Answer 4

Or his way

Answer 5

x + y = 32
and the other equation will take into account the points values
can you set this equation up?

Answer 6

i'm a she!