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Question 997825: 1.18 47% of a number is 2 914. What is the number?
1.19 A father is 60 years old. His son is twice as old as the father was when the son was born. Find out how old the father was when the son was born.
1.20 A number is 8 less than that number times 3. What is the number?
1.21 A tin contains 65 coins, some of which are 10c pieces and some of which are 2c pieces for a total of R 4.50. How many 10c pieces are there?
1.22 A man is 15 years older than twice his daughter’s age.
In 2 years he will be 3 times as old as his daughter.
How old are they now?
1.23 John and James together have 20 sweets. If James gave half of his sweets to John, John would have 16 sweets. How many sweets does each have?
1.24 Find the positive number such that its square is three times the number plus 40.
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Answer by addingup(3677)   (Show Source):
You can put this solution on YOUR website! 47 is percent, per-cent means for every hundred. But you want to know 47 per-one, so you can multiply that per-one for however many you want. So the first thing you do is: 47/100= 0.47.
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Let's call the number we're looking for x. Then:
0.47x= 2 914 Divide both sides by 0.47 and the result is your answer.
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"A father is 60 years old. His son is twice as old as the father was when the son was born. Find out how old the father was when the son was born" Insufficient information. I think you made a mistake copying it and I think it probably should say "The sum of the present ages of a son and his father is 60" If that was the case, then solving it is a breeze.
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