Solve the problem 24 anne and nancy use a metal alloy

This preview shows page 2 out of 2 pages.

Solve the problem.24)Anne and Nancy use a metal alloy that is16.5% copper to make jewelry. How manyounces of a 11% alloy must be mixed with a23% alloy to form 48 ounces of the desiredalloy?
25)An airplane travels 700 miles against the windin 4 hours, and makes the return trip with thesame wind in 2 hours. Find the speed of thewind.Answer:87.5 mph26)A cruise boat travels 36 miles downstream in 3hours and returns upstream in 6 hours. Findthe rate of the stream.
27)If m varies directly as p, and m=32 when p8 , find m when p is 9 .=
28)If x varies inversely as v, and x=40 when v5 , find x when v=25 .=
29)The distance D that a spring is stretched by ahanging object varies directly as the weight Wof the object. If a 4-kg object stretches a spring90 cm, find the distance when the weight is
30)The gravitational attraction A between twomasses varies inversely as the square of thedistance between them. If the force ofattraction is 2.25 lb when the masses are 4 ftapart, what is the attraction when the massesare 6 ft apart?
2

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture