Can you help me i need to find the name the shape and number of sides and number of non intersecting diagonal and number of triangle and sum of interior angles and is it convex or concave?

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?