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Coffee

Age 14 to 16
Challenge Level Yellow starYellow star
  • Problem
  • Student Solutions

At a well known store they sell their own blend of coffee. They use:

Mocha costing £13 per kilogram
Kenyan costing £14 per kilogram
Brazilian costing £17 per kilogram

To make 11 kilograms of this blend of coffee costs £15 per kilogram.
This blend uses more Brazilian than Kenyan coffee.
An exact number of kilograms of each type of coffee is used.
How many kilograms of each type of coffee are used?

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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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