Question

There are 15 printers in one department. If 2/5 are color printers, how many can only print black and white?

Answer 1

your answer would be 9 printers

Answer 2

Hello!

The answer is:

There are a total of 9 black and white printers

Why?

To solve the problem, first, we need to calculate how many color printers represents two-fifths of the total printers, then, calculate the number of black and white printers using the total number of printers and the number of color printers.

Calculating how many color printers does the departament have:

`ColorPrinters=TotalPrinters*(2)/(5) \\\\ColorPrinters=15*(2)/(5)\\\\ColorPrinters=(30)/(5)=6`

Therefore, we have that there are 6 color printers.

Now, calculating the number of black and white printers, we have:

`TotalPrinters=ColorPrinters+BlackAndWhitePrinters\\\\BlackAndWhitePrinters=TotalPrinters-ColorPrinters\\\\BlackAndWhitePrinters=15printers-6printers=9printers`

Hence, we have that there are a total of 9 black and white printers.

Have a nice day!