What’s the correct answer for this? Select all the ones the apply

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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?

Plz hurry evaluate the expression a+b where a=8 and b=19