A straight path for her toy using 11 pieces of track. Each piece of track is 8 centimeters long.
1 answer:
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Let's write it down:
<span>"60 is 75% of s" means:
60=75%*s
75% is
, (percent just means "out of 100" so we just divide it by 100) so we can also write:
60=</span><span>
s
now, let's multiply both sides by 4:
240=3s
and divide by 3:
80=s
So we have the result that the original value, s, is 80!
</span>
<span>"60 is 75% of s" means:
60=75%*s
75% is
60=</span><span>
now, let's multiply both sides by 4:
240=3s
and divide by 3:
80=s
So we have the result that the original value, s, is 80!
</span>
Answer:
Kirk is <u>28</u> years old, Brian is <u>36</u> years old, Matt is <u>18</u> years old, and the manager is <u>24</u> years old.
Step-by-step explanation:
Let be Kirk's age.
Let be Brian's age.
Let be Matt's age.
Let be the boss/manager's age.
From the information given, we can set up 4 equations:
Rewrite the first equation, substituting ,
, and
in terms of
to get:
Open up the parentheses using the distributive property (which is ) and combine like terms to get:
Add 26 to both sides to reach:
Thus, . Substitute
for
in the second, third, and fourth original equations to find that
,
, and
. Therefore, Kirk is <u>28</u> years old, Brian is <u>36</u> years old, Matt is <u>18</u> years old, and the manager is <u>24</u> years old. To check, you can add up all of the ages to get 106.
Hope this helps :)