Question

a pattern calls for green tiles and blue tiles in a ratio of 3 : 4. how many green tiles are needed if 100 blue tiles are used ?

Answer 1

75 green tiles

Explanation:

Green : Blue = 3 : 4

3 : 4 = x : 100

Write as fractions

3/4 = x/100

Cross Multiply (numerator * denominator / numerator * denominator)

300 = 4x

Divide both sides of the equation by 4

x = 75

75 green tiles

Hope this helps :)