Yuh yuh I need help yuh

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?

Can you me find the slope! (30 points)

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?