In 36 days a girl spent 18 dollars. On average, what did she spend daily?
Average is the mean of total observation over a certain span.
Answer: The girl spent at on average, 0.5 dollars each day.
Let's solve the problem, with one step at a time.
Total money spent by the girl = 18 dollars
Total time is taken to spend this money = 36 days
We will use the unitary method.
On average, money spent by the girl in 1 day = (Total money spent) / (Total no. of days taken)
= 18 / 36
= 0.5 dollars each day.