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
Eliminate
C)
17
D)
18

Answer 1

@ajaylounsber

Answer 2

help me

Answer 3

Okay, look at the choices.

14
15
17
18

If there were fourteen 3-point questions then that would be 3 \(\times\) 14 = 42 points.

Answer 4

If you have 14 3-point questions. then you must have 18 4-point questions.

18 \(\times\) 4 = 72

72 + 42 = 114.

So that's too much.

Answer 5

So the answer is NOT 14

Answer 6

ok

Answer 7

Let's try 15:

15 \(\times\) 3 = 45

32 - 15 = 17

17 \(\times\) 4 = 68

68 + 45 = 113.

So the answer is NOT 15 either.

Answer 8

18

Answer 9

i think

Answer 10

Let's try 17:

17 \(\times\) 3 = 51

32 - 17 = 15

15 \(\times\) 4 = 60

60 + 51 = 111

So your answer is 17.

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Answer 11

thanks