Can someone please help me with this I will mark as BRANLIEST

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

Megan and desmond each add the same amount of water to their aquarium megan makes 5 ml of chemical solution with every gallon of water for her aquarium desmond mixed 8 ml of chemical solution for every 2 gallon of the water for his aquarium.