If Christy and Rabia eat 4 cups of popcorn in 30 minutes, how many minutes does it take them to eat a cup of popcorn? Only put the number.

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Me because some of question i don’t understand

This is so hard and it’s for a test