Respuesta :
Answer:
± 20
Step-by-step explanation:
let one number be x then the other number is 6x and the product
x × 6x = 2400 , that is
6x² = 2400 ( divide both sides by 6 )
x² = 400 ( take the square root of both sides )
x = ± 20
Thus the number is 20 or - 20