This month's problem is a challenge from President Donald Trump.
"We’re bringing down drug prices by 1000%, 1200%, 1300%, 1400%," Trump said on Monday, December 21, 2025. "A drug that sells for $10 in London
is costing $130 in New York. We are bringing it down to $20. You can do your own math. But it’s 2000%, 3000%."
So, the problem for this month is to do your own math and determine the correct percent decrease from $130 to $20. Please send in the percent
correct to one decimal place.
Click here for an article about President Trump's comments on December 21, 2025