Doubling cribbage

Brendan and Adam are playing high stakes cribbage: whoever loses each game must double the other players money. For example, if Brendan has £3 and Adam has £4 then Brendan wins, they will have £6 and £1 respectively.
Adam wins the first game then loses the second game. They then notice that they each have £180. How much did each player start with?

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths LI,
puzzles about doubling, or a random puzzle.


Show me a random puzzle
 Most recent collections 

Advent calendar 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

List of all puzzles


sport ave 2d shapes dice algebra regular shapes area cryptic crossnumbers crossnumbers indices geometry wordplay lines remainders advent perimeter tiling partitions hexagons volume pascal's triangle differentiation numbers irreducible numbers balancing logic means surds cryptic clues calculus rectangles multiplication floors cube numbers division routes colouring integration probabilty the only crossnumber square numbers crossnumber quadratics square roots functions unit fractions folding tube maps shapes trigonometry dodecagons averages factors proportion scales palindromes bases combinatorics clocks elections time menace addition dominos range percentages rugby dates angles doubling taxicab geometry sequences digits chess mean circles squares coins planes arrows people maths graphs polygons money prime numbers triangle numbers complex numbers coordinates sum to infinity digital clocks number crosswords 3d shapes cards games grids gerrymandering chalkdust crossnumber median integers odd numbers parabolas star numbers factorials spheres sums books products triangles probability fractions speed symmetry christmas ellipses shape chocolate quadrilaterals multiples perfect numbers


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021