Răspuns :
100kg.......30celsius
x .......20celsius
x=(100x20):30
x=2000:30
x=66,(6)
x .......20celsius
x=(100x20):30
x=2000:30
x=66,(6)
Explicație:
100kg.......30°C
x................20°C
x=(100•20):30
x=2000:30
x=66,(6)