“My car uses just 8 litres per 100km”, boasted Jim. “Mine does 540km on a full 45 litre tank”, said Kim. “Mine does 13km per litre”, said Lim. Write J (Jim), K (Kim), and L (Lim) in order to represent the three cars – with the most economical car first and the least economical last.
Select one option, then click Submit.
KJL
LKJ
JKL
LJK
KLJ
Select an option, then submit.
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
Junior Mathematical Challenge 1997 (1997)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →Junior Mathematical Challenge 1997 (1997)