Ben wants to buy a video game that cost 50$.if he has to pay a7% sales tax: how much tax would he need to pay?

53.5$. You can find this answer by multiplying 50$ by 0.07 ( the tax moved two decimal places to the left because we are dealing with percentages). This will get you to 3.5 which is the tax additional to the 50$. Now, add the two numbers together. 50+ 3.5= 53.5. So your final answer is 53.5.