(i). In a survey about colour liking it was determined that everyone surveyed liked at least one of the three colours (Red, Green and Blue). 30% liked red, 40% liked green and 50%

liked blue. 10% liked both red and green, 5% liked both green and blue, while 10% liked

both red and blue. Determine the proportion

a. That liked red only (

b. That liked blue only (

c. That liked green only (2

d. That liked all the colours​

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

read more on -

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

246

step-by-step explanation: