A test had 30 questions worth 100 points. The test consist of true/false questions worth 2 points and some multiple choice worth 12. How many t/f questions r there

Answer 1

t represents the number of true/false

30 - t represents the number of multiple choice

2t + 12(30 - t) = 100

Can you solve for t and answer?

Answer 2

t + m = 30

2t + 12 m = 100

Multiply the first equation by 2 and subtract it from the 2nd

10m = 40

m=4

You should be able to get the value of t and then check you answer.