A dad offered to pay his son $5 for every correct answer on his math test. His son said he would pay his Dad $8 for every incorrect answer. There were 26 questions on the test and no money was exchanged.
The son got 16 questions correct and missed 10. This means he owed his Dad 10 * $8 = $80, but his Dad owed him 16 * $5 = $80, so it was a wash. Two math equations to solve it are x + y = 26 and 5x = 8y.
The most popular answer for this teaser is ‘today’. Of course this only works if you’re reading it on that particular date or if the date is not specified. Another option is to respond literally with ‘a date’. Lastly, certain dates could be squeezed into letters using Roman numerals if you abbreviate the year to 2 numerals. For example, January 20th, 2011 would be I XX XI.
Pencil lead. While modern pencils don’t contain lead, that’s still what we call the graphite compound. When real lead was used in pencils it was mined and nearly everyone has used a pencil at some point in their life.
I’m a six-letter word. If I did not exist, you wouldn’t either. With my first letter omitted I’m an alternative. The last three letters are feminine. The first four letters make an insect.
Ida puts her coffee into the microwave, as she does every morning, for exactly two minutes. When the microwave goes off, she opens the door, but then closes the door again and sets the microwave for two more seconds. What good would two more seconds be?
A nine-letter word, common as air, When each letter’s cut, a new word to pare, Take a letter each round and continue to one. Name the word and the path and then you’ll be done.
Surprisingly, there are several nine-letter words that can have one letter removed in each round to make a new word all the way to one letter, which must be ‘a’ or ‘i’. Startling is the most common answer, but I’ve included the other words I’m aware of. I don’t include plural words, like cleansers, drownings, splatters, starvings, trappings and wrappings because it’s kind of cheating.
startling Remove the l to make starting (or remove the t to make starling) Remove the t to make staring Remove the a to make string Remove the r to make sting Remove the t to make sing Remove the g to make sin Remove the s to make in Remove the n to make I
splitting Remove the l to make spitting Remove the p to make sitting Remove a t to make siting Remove the first i to make sting Remove the s to make ting Remove the g to make tin Remove the t to make in Remove the n to make I
stringier Remove the r to make stingier Remove the i to make stinger Remove the t to make singer Remove the r to make singe Remove the g to make sine Remove the e to make sin Remove the s to make in Remove the n to make I
strapping Remove the s to make trapping Remove the t to make rapping Remove the p to make raping Remove the r to make aping Remove the a to make ping Remove the g to make pin Remove the p to make in Remove the n to make I
The moon. The moon has been around for quite some time, but there’s a “new” moon every month or so. A Blue moon is a rare event. The moon is a body of rock, so it’s never empty, but we do see what we call a full moon some nights. And the moon’s gravity “pulls” on the ocean to create low and high tides, but it doesn’t push anyone around because it’s a friendly fellah.