Helen is currently is 8 years old.
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How to solve world problem ?</h3>
Endeavor to understand the question, analyze it and interpret it into equation.
Given that Helen's age is multiples of 4. Next year it'll be a multiple of 3. Helen's older brother is now 19.
This means Helen current age is multiple of 4 and next year it will be a multiple of 3. Also, Helen's age is less than 19
The two available numbers that fit this analysis and less than 19 are 8 and 9. 8 is multiple of 4. 8 + 1 = 9 which is multiple of 3
Therefore, Helen is 8 years old now
Learn more about Arithmetic here: brainly.com/question/6561461
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Answer: If he has 3 mystery books, and those are 1/8 of his whole collection, he has 24 books.
Step-by-step explanation:
3 = 1/8 × x
multiply both sides by the reciprocal of 1/8 which is 8/1 ("flipped fraction")
8 × 3 = 8/1(1/8) x <em>When you multiply a fraction by its reciprocal, it produces 1, so it "cancels" in the multiplication</em>
<em>24 = x </em>
<em>This may seem complicated, but understanding the process will help you solve more complicated questions like this in the future, I hope.</em>
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Answer:
Step-by-step explanation:
1 gallon = 3.78litres
hence if the acid is $33.19/gal
3.78 litres will be sold for $33.19
while
1 litre will be sold for $33.19/3.78
1 litre will be sold for $8.78
hence the cost per liter is $8.78
We cannot simplify it because the denominator does not have a common factor with the numarator.
Answer:
-1*70
Step-by-step explanation:
-1*70=-71