5/25= 10/50. which method did you use to determine whether this proportion is true or false? Select:  A) true  B) neutral  C) false  D) not sure  E) none
5/25= 10/50. cross multiplication:   5 * 50= 
<gadget id="calculator">  5 * 50</gadget>
<output>250</output>
250, 10 *25= 250,   we see that 250 are not equal to 250 so there is proportion. corrcet answer: (true)
<result>A</result>
5/25= 10/50. which method did you use to determine whether this proportion is true or false?