Please help
Zachary and Nina made a display in the school window. They cut a piece of ribbon into 42 equal pieces. Each new piece was 15 cm long. Write an equation for the original length of the ribbon.
42 * 15 = t
To find the original length of the ribbon, we can set up an equation.
Let's denote the original length of the ribbon as "x" cm.
According to the information given, Zachary and Nina cut the ribbon into 42 equal pieces, and each new piece was 15 cm long. This means that the total length of all the new pieces would be equal to the original length of the ribbon.
Now, if each new piece is 15 cm long and there are 42 of them, the total length of the new pieces would be 15 cm times 42, which is equal to 630 cm.
Therefore, we can set up the equation:
Total length of new pieces = Original length of ribbon
630 cm = x cm
Hence, the equation for the original length of the ribbon is:
x = 630 cm.