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Question
primary 6 | Maths
| Percentage
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Please help is the answer 30 more pieces ?
Date Posted: 3 years ago
Views: 500
Yes it is 30
See 2 Answers
One thing to recognise is after you add the new number of $1 coins to your collection, the number of other coins remains the same.
Previously,
Number of $1 coins = 200 x 25% = 50 coins
Number of other coins = 200 x 75% = 150 coins
After adding more $1 coins,
$1 will then take up 40% of total coins, while other coins take up 60%
60% = 150 coins
1% = 150 ÷ 60
40% = (150÷60) x 40
= 100 coins
There's 100 $1 coins now.
So, number of $1 coins to add is 100 - 50 = 50 coins.
Previously,
Number of $1 coins = 200 x 25% = 50 coins
Number of other coins = 200 x 75% = 150 coins
After adding more $1 coins,
$1 will then take up 40% of total coins, while other coins take up 60%
60% = 150 coins
1% = 150 ÷ 60
40% = (150÷60) x 40
= 100 coins
There's 100 $1 coins now.
So, number of $1 coins to add is 100 - 50 = 50 coins.
Yes correct answer 50
done
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Hope this helps :)
Date Posted:
3 years ago
Thank u so much appreciate
Sorry. I'm afraid the answer is not 30. It's 50.
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