Answer: 30 percent of people who do not brush theit teeth every night.
Step-by-step explanation:
Given : 7 out of 10 people brush their teeth every night.
That means 3 out of 10 people do not brush their teeth every night. (7-10=3)
Now, the percent of people who do not brush their teeth every night =
Hence, 30 percent of people who do not brush theit teeth every night.
Let the total cost of the meal be = x
Let Emily pays the smaller ratio or amount.
Emily's dad pays = 52.20
Emily and her dad share in the ratio = or 2:3
The given ratio means that Emily pays of the total and dad pays of the total.
As dad paid 52.20 so,
Hence, total cost of the meal is £87 and Emily's share is £34.80