Which one is greater $16 for a 25 - ounce block or $18 for a 30- ounce block

Janet is mixing a 15% glucose solution with a 35% glucose solution. this mixture produces 35 liters of a 19% glucose solution. how many liters of the 15% solution is januet using in the mixture? a. 25 liters c. 28 liters b. 7 liters d. 10 liters

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Answer this question, only if you know the answer. 30 points and brainliest!