it is given that ratio of walnuts to milk chocolate chips is 5 : 8
in a batch there is 35 walnuts in it
and the sum
if the walnut is 35 then milk choco chips will be
7*(5 : 8) = 35 : 56 due to ratio maintain
here 35 walnuts and 56 milk choco chips is here,
walnut + milk choco chips + white choco chips is 123
35 +56 + white choco chips = 123
white choco chips = 123 - 56 - 35
= 123 - 91
= 32
so there are 32 milk choco chips are there in this batch.
answer = 32.