How do you work out 3/5 of 65?

Which of the choices shown could be used to prove that aacp=abcp ?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

(x-5)1/2+5=2 what is possible solution of this equation