NJHS, MathCOUNTS, Speech & Debate, Geo Bee, and History Bee
National Junior Honor Society (NJHS)
This January the NJHS Service Committee will be sponsoring a school wide canned food drive to raise food for Manna FoodBANK. This event, called the Souper Bowl, will last four weeks and will pit each grade level against each other in four quarters of competition. The Souper Bowl champion grade level will receive glory and honor and their grade and year on a plaque that will move with us to the new building. Start collecting cans today!
With the help of flowers in used wine bottles, the cafeteria was transformed into an Italian restaurant.
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The staff on a break.
Each week on the MathCOUNTS website, they publish a problem of the week. Here is this week's problem.
Snow Day Probability
When the weatherman says the chance of snow in the city is a certain percent, this is a measurement called “Probability of Precipitation.” The “Probability of Precipitation” is the chance of precipitation occurring in any area of the city. The formula for Probability of Precipitation is PoP = C × A, where C is the percent chance precipitation will occur somewhere in the city, expressed as a decimal, and A is the fraction of the city that will receive precipitation.
If the weatherman determines there is 45% chance of snow for 89% of the city, what will he announce on his weather report as the chance of show for the entire city? Express your answer to the nearest whole number percent.
The city of Chillville is anticipating snow. If there is a 70% probability of precipitation tomorrow in the city of Chillville based on an x percent chance that 4/5 of the city will receive snow, what is the value of x? Express your answer to the nearest hundredth.
The students at Jack Frost Middle School are anxious to know the likelihood they will have a snowday. In order for there to be a snowday more than half of their school district must receive snow. If their school district covers 67% of the city of Chillville and there is 100% chance that it will snow somewhere in the city, what is the minimum PoP for the city of Chillville that guarantees the students will have a snowday? Express your answer to the nearest whole percent.