## Land ProblemMath brain teasers require computations to solve.
A, B, and C each had land: am^2 (m^2=square meters), bm^2, and cm^2 (this is c square meter, not square centimeter!) big. A sold 1/4 of his land to B, then B sold 1/3 of the land he had (after he bought land from A) to C. If A, B, and C now have the same amount of land, what does (b+c)/a equal to?
## Answer5/4(multiplication symbols are not written down) Steps: (3/4)a=2/3((1/4)a+b)=1/3((1/4)a+b)+c 3a/4=(a+4b)/6=(a+4b+12c)/12=k a=(4/3)k, b=(7/6)k, c=(1/2)k (b+c)/a = (7k/6 + 1k/2)/(4k/3) = (10k/6)(3/4k) = 5/4 Hide ## What Next?
Tweet
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 |