Exactly Three-quarters

Stage: 3 Short Challenge Level: Challenge Level:2 Challenge Level:2
See all short problems arranged by curriculum topic in the short problems collection

Three-quarters of the area of the rectangle has been shaded.
What is the length of $x$?


If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.




This problem is taken from the UKMT Mathematical Challenges.