Four divided by blank equals 24 what is the answer ? ?

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Write 17/20 as a decimal and as a percent.