The ratio of the sales of black coffee to sugar coffee to milk coffee is 3:7:5. The total sales of the three coffees is 300 cups.
Each cup of black coffee costs 50 cents and each cup of
sugared coffee costs 60 cents. If the earnings from the total
sales was $165, what is the price of each cup of milk coffee?

add an image, and i will answer

step-by-step explanation:

answer: y=4000x+14000

step-by-step explanation:

hreryryrranswer:

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116