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Paying the Bill

Age 11 to 14
ShortChallenge Level Yellow starYellow star
Secondary curriculum
  • Problem
  • Solutions

Gill is 18 this year. She and I went to a restaurant for lunch to celebrate her birthday.

The bill for lunch for the two of us came to £25.50.

Gill paid the bill by credit card and I left a £2.50 tip in cash.

We agreed to split the total cost equally.
How much did I owe Gill?

 

 

This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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