Each year ,a school sends 50 students to a conference . last year , the cost was $12.50 per student. this year ,the cost per student has increased by 16%.what is the total cost to 50 students to the conference this year? answer

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?