Acomponent in a music system has a life expectancy of 2,400 hours with a standard deviation of 300 hours. if an average person listens to music for 1,000 hours in a year, the probability that the component lasts for more than 3 years is

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?