The sixth-graders at Norma's school got to choose between a field trip to a museum and a field trip to a factory. 40% of the sixth-graders picked the museum. If there are 65 sixth-graders in all at Norma's school, how many sixth-graders went on the trip to the museum?

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The paint recipe also calls for 1/4 cup of food coloring. tyler says mrs.mcglashan will also need 6 cups of food coloring. do u agree or disagree? explain.