human
Find the number which when added to the given ratio a : b , the ratio changes to c : d | Function to return the required number X.
Driver code"
How can the above be solved in Python?
assistant
#Here is code to find the number which when added to the given ratio a : b , the ratio changes to c : d and the other steps required.
 def getX ( a , b , c , d ) :
	X = ( b * c - a * d ) // ( d - c )
	return X
a = 2
b = 3
c = 4
d = 5
print ( getX ( a , b , c , d ) )