If there is a increase in the number of workers in a factory in the ratio 4 : 15 and a decrease in the wages of individual workers in the ratio 25 : 16, then the ratio of total wages of the workers changes by what ratio?

5  :  12 35  :  69 100  :  240 14  :  39

5  :  12

Change in number of workers      4  :  15 Change in individual wages         25 : 16    Ratio of total wages =          4 x 25 :  15 x 16  =    5  :  12