My child needs help on this problem please...

In a survey, the ratio of the number of people who preferred MILK CHOCOLATE to those who preferred PLAIN CHOCOLATE was 5:3

46 more people preferred MILK CHOCOLATE, to PLAIN CHOCOLATE.

How many people were in the survey?

What she's done so far is 5+3 = parts in the ratio and said that there are 64 people who took part in the survey as 8x5 = 40 and 8x3 = 24

Can some help please to answer the question.

Many thanks!