Answer:
80% are 15 years old
Step-by-step explanation:
To find the percent , we need to know how many out of 100
20/25
Multiply the top and bottom by 4
20*4
-----------
25*4
80/100
This is 80%
80% are 15 years old
5 minus 3 1/3 is 1 2/3
step one: turn into improper fractions
15/3 minus 10/3
step two : answer
15/3 minus 10/3 = 5/3 =1 2/3
0.84 [Decimal] And in simplest form.
Answer:
Each month you should save $ 150
Step-by-step explanation:
First, the earnings are given per year, so we need to transform $36000/year into dollars per month. So, using a rule of three as following, we obtain:
$ 36,000 ------------- 12 months
X -------------- 1 month
Solving for X, we get:

X = $ 3,000 /month
it means that earn $36,000/year is equivalent to earn $3,000/month
Now, we need to find the 5% of $3,000, this can be calculated making the following multiplication:

Then, each month you should save $150