The glazier brigade had 60 glasses. They installed 4 glasses in 9 apartments.

The glazier brigade had 60 glasses. They installed 4 glasses in 9 apartments. How many glasses did the brigade have left?

Now we cannot immediately determine the number of glasses that remained with the brigade. First, let’s count how many glasses the glazier team installed in the apartments. To do this, you need to multiply the number of glasses that were installed in one apartment by the number of apartments. Therefore, the calculation will be like this

4 × 9 = 36 – the team inserted glass.

And now we can count how many glasses they have left. To do this, subtract the number of glasses inserted from the total number of glasses. In this way,

60 – 36 = 24.

This means that the team of glaziers has 24 glasses left.