Exam 10: Percent Percentage

The first shift of a manufacturing firm produces 3.6% defective pieces out of a total production of 2,555 pieces. The second shift produces 5.8% defective pieces out of a total production of 2,072 pieces. The first shift produces ____________________ more acceptable pieces than the second shift.

11/16 expressed as a percent is ____________________.

An engine loses 6.70 horsepower through friction. The power loss is 5.20% of the total rated horsepower. The total horsepower rating is ____________________. (Round to the nearest whole horsepower.)

What percent of 227.6 is 329.4? (round answer to 1 decimal place)

What is 7% of 140?

An alloy of brass is composed of 84.6% copper, 5.20% tin, 6.70% lead, and zinc. The number of pounds of zinc required to make 520.0 pounds of alloy is ____________________.

A casting, when first poured, is 14.872 inches long. The casting shrinks 0.098 inch when it cools. The percent of shrinkage is ____________________. (Round to 2 decimal places.)

519 is 120% of ____________________.

60 is 80% of ____________________.

Find the simple interest and the amount on $1000 at 15% after 3 years.

A carpenter completes a home remodeling job in 85% of the estimated time. The estimated time is 136 hours. The job actually takes ____________________ hours to complete. (Round to the nearest hour.)

25% of 120 is ____________________.

8.731 written as a percent is ____________________.

0.91 written as a percent is ____________________.

173.8% of 87.20 is ____________________. (Round to 1 decimal place.)

80 is 60% of what number?

Find the interest after a 7 month period if the annual rate of interest on $1000.00 is 12%.