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Question

An artist made a design using tiles. The design had an area of 3/2 square meters, and each tile used in the design had an area of 1/10 square meters. A different design by the artist used 19 of the same tiles. What is the difference between the number of tiles used for the two designs?

Answer 1

Design Area A=3/2 m2 Tile Area A= 1/10 m2 dividing up the design area into the tile area gives you the number of tiles that were used: 3/2 / 1/10 = 30/2 = 15 tiles. since in the second design the artist used 19 tiles, the differences between the number of tiles used is: 19 - 15 = 4 tiles

Answer 2

(3/2) ÷ (1/10) = 30/2

 

  = 15 tiles used

 

19 - 15 = 4 more tiles used