Question

Find the cost of 1 km of pipe at 7 cents for every 40 cm.

please with explanation

Answer 1

Answer: The price of 1km of pipe is $175

Explanation:

First, we have the price per 40cm of pipe, then we should see how much times we can fit 40cm into one kilometer.

First write both magnitudes in the same units:

40cm = 0.4m

1km = 1000m

Then we see the quotient:

1km/40cm = 1000m/0.4m = 2500

So we can divide a 1km pipe into 2500 40cm pipes.

Knowing that 40cm of pipe are priced at 7cm, then 2500 times that is:

2500*$0.07 = $175

The price of 1km of pipe is $175