До обіду насос працював 4 год, а після обіду — 3 год. Скільки літрів води накачав насос до обіду та після обіду окремо, якщо всього він накачав 10 500 л води?

My familyMy family is not very big, there are five people. They are: father, mother, grandmother, sister and me. My grandmother 77 years old, she is very nice. My sister is studying in Almaty, to engineer the builder. Learn it very well. Parents work at the depot. They often ezdiyut fishing. In autumn, we together let's get out in the garden. I love my family.