Solve the problem.Anne and Nancy use a metal alloy that is 20% copper to make jewelry. How many ounces of a 14% alloy and a 24% alloy must be mixed to form 100 ounces of the desired alloy?

A. 40 at 14% and 60 at 24%
B. 70 at 14% and 30 at 24%
C. 30 at 14% and 70 at 24%
D. 60 at 14% and 40 at 24%


Answer: A

Mathematics

You might also like to view...

Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.tan x + sec x = 1

A. 0
B. No solution
C.
D.

Mathematics

Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 23°F to Celsius.

A. 73.4°C B. 19.2°C C. -5.0°C D. 9.4°C

Mathematics

Find the mode or modes for the list of numbers.Ages of parents (in years) at the school: 20, 38, 46, 38, 49, 38, 49

A. 46 years B. 49 years C. 39.7 years D. 38 years

Mathematics

Factor completely.x2 + 2xy - 15y2

A. (x - 5y)(x + y) B. (x + 5y)(x - 3y) C. (x - y)(x + 3y) D. (x - 5y)(x + 3y)

Mathematics