# Spent 600 kg of plaster for repair of 3 houses: on one house the fifth part of all quantity, on other house the fourth part. How many plaster was spent for the third house?

Svirid

262

1) 600:5*1=120kg on 1 house 2) 600:4*1=150 kg on the 2nd house of 3) 120+150=270 kg on two houses of 4) 600-270=330 kg on the 3rd house. 1) 600:5*1=120 (plasters) - on one house 2) 600:4*1=150 (plasters) - on the second house 3) 120+150=270 (plasters) - on two houses 4) 600-270=330 (shtkaturka) - on the third house

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