ratios

Question 1

splitting amounts in a certain ratio

Answer 1

split 2080 in the ratio 17:15
add the 2 ratios together to get the bottom number 
find 1 share i.e 2080/32 = 65 ( 1 share)
the x that by the ratios 
i.e 17x65=1105
16x65=975

Question 2

question 40kg in the ratio 5:11

Answer 2

40/16=2.5
5: = 2.5x5= 12.5
:11= 2.5x11=27.5