Kallah needs to buy ribbon for a sewing project. The fabric store charges 2 dollars per meter. How much will it cost Kallah to buy on ribbon that is 75cm long?
We need to find how much money it costs for 75cm. First let's change 75cm to m. There are 100cm to m. [tex] \frac{75cm}{1} * \frac{1m}{100cm} = 0.75m[/tex].
Now we can create a proportion to find how much it costs for a 0.75m ribbon. Then we solve it by cross multiplying. For some reason I can't put the dollar sign ($) in front of the 2. [tex] \frac{2}{m} = \frac{x}{0.75m} \\\\
x = 2(0.75) = 1.5[/tex]
It costs $1.50 to buy a ribbon 0.75m, or 75 cm long.
