Question 836116
With a ratio 2:5:13 , each part represents 1/(2+5+13) = 1/20 of the whole.
2 parts = 2/20ths of 13000 
= (2/20)(13000)
= (1/10)(13000)
= 1300
5 parts = 5/20ths of 13000
= (5/20)(13000)
= (1/4)(13000)
= 3250
13 parts = 13/20ths of 13000
= (13/20)(13000)
= 8450
So with a ratio of 2:5:13 we have 1300:3250:8450 .