Respuesta :
Answer:
25
Step-by-step explanation:
Set up the equation
(2/5)x = 10 "two fifths of some number is 10"
Now solve for x
Multiply both sides by the reciprocal of 2/5, which is 5/2
(5/2)(2/5)x = 10(5/2) {this will eliminate the fraction on the left side}
x = 50/2 (simplify)
x = 25 (simpify)
