Answer:
what?
Step-by-step explanation:
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If the sale is of 60% it means that it is being sold for:
100 - 60 = 40%
Now use the rule of three to find the answer:
40 - 199
100- x
(100 * 199) / 40 = x
19900 / 40 = x
497,5 = x
Answer:
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Answers:
- Sam's current age = 24
- The mother's current age = 48
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Explanation:
s = Sam's age right now
2s = the mother's age right now, since she is twice as old as Sam currently.
In 12 years time, Sam will be s+12 years old.
12 years ago from this current year, the mother was 2s-12 years old.
Since we're told these future and past ages line up, this means s+12 and 2s-12 are the same value
Set the expressions equal to one another and solve for s.
s+12 = 2s-12
s-2s = -12-12
-s = -24
s = 24
Sam is currently 24 years old.
His mother is currently 2s = 2*24 = 48 years old.
12 years ago, his mother was 2s-12 = 48-12 = 36 years old.
12 years from now, Sam will be s+12 = 24+12 = 36 years old.
Since we get 36 each time, this confirms we have the correct answers.
Answer:
would be 4cm x 4 cm = 16 sq.cm. 6 surfaces of the cube would be 6 x 16 = 96 sq.cm. By definition, a cube has congruent sides. So, each side has an area A = s^2.
Step-by-step explanation:
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