2. Clare mixes 2 1/2 cups of water with 1/4 cups of orange juice concentrate. How many cups of water is there per cup of orange juice concentrate? * A.) 1/10 cup of water
B.) 5 cups of water
C.) 15/2 cups of water
D.) 10 cups of water

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

Can someone me with this problem i don't understand i need

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?