Waldo's PeanutsMath brain teasers require computations to solve.
Waldo ate a total of 100 peanuts in 5 days. Each day, he ate 6 more peanuts than he did the day before. So, how many peanuts did Waldo start with on the first day?
HintExample; if Waldo started with 20 peanuts on day 1, he should have eaten 26 peanuts on day 2. By then, he would have eaten a total of 46 peanuts in 2 days. 20 is not the correct answer though, because by day 5, he would have eaten 160 peanuts.
AnswerWaldo ate 8 peanuts on day 1. He had 14 peanuts on day 2 and added 6 peanuts each day up to day 5. By day 5, Waldo would have eaten a total of 100 peanuts.
See another brain teaser just like this one...
Or, just get a random brain teaser
If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.
Back to Top