Charles bought a box of fruit that contained only oranges and tangerines.
There were 5 oranges for every 3 tangerines in the box,
there were 20 oranges in the box.
Which of the following proportions can be used to find x, the number of tangerines in the box?

x=12

S1tep-by-step explanation:

oranges=20                                                              

20/5=4

tangerines=x

x=4x3

x=12

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: