a. to find the percentage, we take the total amount of white squares and divide it over the total number of squares. So it's 5/20 = 25%
b. If 80% of the cost is laying the tiles, that means the rest of the cost comes in buying the tiles (20%) this means that the ratio of that would be
80% : 20%
or simplified to
4% : 1%
Answer:whgdwyhdiuwojm
Step-by-step explanation:
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the answer to this question would be 0.185185185185185
