SOLUTION: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

Question 1210341: 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

Found 3 solutions by josgarithmetic, ikleyn, greenestamps:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
Too many asked at once. I will only do #10.

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10. A man is 5 times as old as his son. In 15 years, he will be twice as old. How old are they now?
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m, the man's age now
m/5, his son's age now

The second sentence means exactly .
You did not specify without amiguity.

Answer by ikleyn(52782)   (Show Source): You can put this solution on YOUR website!
.

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Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!

x = son's age now
5x = man's age now
x+15 = son's age in 15 years
5x+15 = man's age in 15 years

In 15 years the man will be twice as old as his son:

5x+15 = 2(x+15)
5x+15 = 2x+30
3x=15
x=5

ANSWERS:
The son's age now is x = 5
The man's age now is 5x =25

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