Question

Kiki's family drank a total of 42.5 gallons of milk on January and February. Her family drank 5.3 gallons more milk on February than on January. How many gallons of milk did Kiki's family drink in February?

Answer 1

let Kiki's family drank milk in February = x gallon and January = y gallon .

according to question,
x + y = 42.5 --------------(1)

again,

x - y = 5.3 --------(2)

solve equations (1) and (2)

2x = 42.5 + 5.3 =47.8
x = 23.9

hence, kiki's family drank milk in February = 23.9 gallons