Sushi was thinking of a number. Sushi doubles it, then adds 20 to get an answer of 27.7 what was the original number

3.85

Step-by-step explanation

7.7 divided by 2 = 3.85

So if you double 3.85 you get 7.7 and then add 20 to 7.7 then you get 27.7

Let the number they are thinking of be X.

They double x , which would be 2x.

They then add 20, which would be 2x +20

So you have 2x + 20 = 27.7

Now we can solve for x:

Subtract 20 from both sides:

2x = 7.7

Divide both sides by 2:

x = 7.7 / 2

x = 3.85

The original number was 3.85

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: