Please help me! The temperature of a mixture was 12°Celsius at the start of the experiment. After four hours the temperature decreased 25°. What is the current temperature of the mixture?

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?