The sales tax rate is 9 1/2%. Estimate the tax on a $9.98 purchase. How did you arrive at your answer?
1 answer:
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Solution: We are given that:
5 people can paint 7 walls in 21 minutes
Therefore, 1 person can paint 7 walls in minutes
Which means 1 person can paint 1 wall in minutes
Now, 3 people can paint 1 wall in minutes
Therefore, 3 people can paint 5 walls in minutes