Algebra-1

To determine the number of questions that Tom answered correctly and wrongly, we can set up a system of equations based on the given information.

Let x be the number of questions Tom answered correctly and y  be the number of questions he answered wrongly.

We know that the total number of questions is 20. This information can be translated into the equation: x + y = 20

We also know that one gets 5 points for each correct answer and 3 points will be deducted for each wrong answer. Thus, the equation  can be written as: 5x - 3y = 60, then

1. Solve the first equation for y: y = 20 - x

2. Su...