There is an exam worth 145 with 50 questions. Some questions are worth 2 points and some are worth 5 points, how many two point questions are on the test?

35 two-points questions.

Step-by-step explanation:

The exam is worth 145 points.

The exam has 50 questions.

Some questions are worth 2 points and;

Some are worth 5 points.

Let the number of two-points questions be x and;

The number of five-points questions be y

This creates a simultaneous equation below:

x + y = 50 ... (i)

2x + 5y = 145 ... (ii)

Multiplying (i) by 2 and (ii) by 1 we get;

2x + 2y = 100 ... (i)

2x + 5y = 145 ... (ii)

Subtracting (ii) - (i) we get;

0 + 3y = 45

3y = 45

y = 15

So the number of five-points questions is 15 and the number of two-points questions is 50 - 15 = 35

5/4 do the 2 lines then add1 then u get the anwswr

Step-by-step explanation: