Agroup of four students is performing an experiment with salt. each student must add 3/8 teaspoon of salt to a solution. the group only has a 1/8 teaspoon measuring spoon. how many times will the group need to fill the measuring spoon in order to perform the experiment? me on this

You purchased 8 pounds 10 ounces of candy from a candy shop. you want to split it equally among 3 classrooms at a local school.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?