Sam rented a truck for one day. there was a base fee of $19.99, and there was an additional charge of 75 cents for each mile driven. sam had to pay $159.49 when he returned the truck. for how many miles did he drive the truck?

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?