We sewed 40 duvet covers, spending 6 meters of chintz for each. The same number of calico meters were

We sewed 40 duvet covers, spending 6 meters of chintz for each. The same number of calico meters were used for pillowcases. Each pillowcase used 4 meters 8 centimeters less chintz than a duvet cover. How many pillowcases have been sewn.

Let’s find how many chintz we spent on duvet covers:
40 × 6 m = 240 m.
Let’s find how much chintz is spent on one pillowcase:
4 m 8 cm = 4.08 m.
6 m – 4.08 m = 1.92 m.
Knowing that the same amount of chintz was spent on pillowcases as on duvet covers, we will find the number of sewn pillowcases:
240 m ÷ 1.92 m = 125.
Answer: We made 125 pillowcases.