ratio is the same as division////

so

according to BODMAS rule,

We start with division.......which is ratio, them multiplication, then addition and lastly......subtraction

64:4:2 gives 64\4\2

which is 32.

0 times 4 is zero, and 32 times 3 is 96

so 5 + 96 gives 101 -0 is 101

so the aNSWER IS 101/