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ckisthecoolest:
A factory produced 150 tons of steel in one year. The next year, the output increased to 180 tons. What is the percentage increase in the output? A. 17% B. 20% C. 30% D. 50% E. 75%
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jhonyy9:
180-150 = 30 so using the rule of 3 simple you can calcule then 150 mean 100% so 30 what percentage mean ?
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