Amanda had $20 when she went into the shopping center. She purchased a snack to eat for $y and then bought two items at a clothing store each of which cost $x. Which expression represents the amount of money she has left after the purchases? *

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?