Which least number must be added to two numbers that are in the ratio of 23 : 19 so that they become in the ratio of 5 : 4 ?

-1 -3 2 5

-3

Let the number which is to be added = x ATQ, \(\frac{23 + x}{19 + x}\) = \(\frac{5}{4}\) 92 + 4x  = 95  + 5x             x  =  3