3 ms·
A math problem for Austrian 10-year-olds
- iamjdg 8y ago23
- s_severus 8y agoNope, sorry!
- s_severus 8y agoI found this interesting because: 1) It is evil 2) Is it actually teaching math? Without reading any comments, your first attempt to solve it will most probably be wrong.
- sb001 8y ago23. It is really amazing.
- ColinWright 8y agoNope.
- sb001 8y agoYeah, its evil =( 6s = 30 -> s = 5 2b + 2s = 20 -> 2b = 20 - 10 -> b = 5 4p + 1b = 13 -> 4p = 13 - 5 -> 4p = 8 -> p = 2 ------------------------> 1s + ((1b + 2s + 2p) * 1p) = ? 5 + ((5 + 25 + 22) * 2) = ? 5 + ((5 + 10 + 4) * 2) = ? 5 + (19 * 2) = ? 5 + 38 = 43 -----------------> [6s] + [4p + 1b] = 43 65 + 42 + 5 = 43 30 + 8 + 5 = 43 ----------------> [6s] + [4p + 1b] = 43 [6s] + [4p + 1b] =? 1s + ((1b + 2s + 2p) * 1p) [6s] + [4p + 1b] =? 1s + [(1bp + 2sp + 2p^2)] [6s] + [4p + 1b] =? 5 + [52 + 252 + 2(2*2)] [6s] + [4p + 1b] =? 5 + [10 + 20 + 8] [6s] + [4p + 1b] =? 5 + 38 [6s] + [4p + 1b] =? 43 43 = 43
- The_suffocated 8y agoThe equations are already arranged in a manner that the unknowns can be solved directly by forward substitution (3s=30 => s=something, 2k+s=20 => 2k=something => k=something,...). I am shocked that so many people in that twitter thread are not able to solve them. Edit. But this may be a trick question, because in the last equation, what you have is not a pair of shoes, but one single shoe. The same for the thingy wrapped in newspaper.
- simonblack 8y agoMore shoes than that.