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During a certain day, a worker made 81 parts. He usually does 45 parts per day. What was the percent by which he increased the number of parts he usually makes?

2 Answers

5 votes

Answer:

Increase by 80%

Explanation:

45 : 100%

81 : y


(81)/(45) :(y)/(100)

y × 45 = 81 × 100

45y = 8100

45y ÷ 45 = 8100 ÷ 45

y = 180

180% - 100% = 80%

Increase by 80%

User Theatlasroom
by
7.9k points
6 votes

Answer:

The answer is 80%.

Explanation:

During a certain day, a worker made 81 parts.

He usually does 45 parts per day.

Number of extra parts made =
81-45=36

The percent by which he increased the number of parts he usually makes can be given as =
(36)/(45)*100 = 80%

Therefore, on that day, the percent increased by 80%.

User Xfze
by
9.0k points

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