The music store sold 12 trumoets and 19 clarinets last month. if clariners sell for $139.95 and the store made $4,578.45 from sales on the two instruments, find the price of a trumphet.

$ 159.95

Step-by-step explanation:

139.95 x 19 = 2,659.05 In total the 19 clarinets = $ 2,659.05

$ 4,578.45 - $ 2,659.05 = $ 1919.40 In toal the 12 trumpets are = $ 1,919.40

$ 1,919.40 ÷ 12 = $ 159.95 The trumpets cost $ 159.95 each.

Hope this helps you out : )

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

60%