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Question
primary 6 | Maths
2 Answers Below
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Any kind soul?
Date Posted: 6 years ago
Views: 566
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Use trial and error.
Note that the no. of 30cent coins are 8 times that of 40cent coins. Start with 80 for 30cents with hopes that when totalled with 10 40-cent coins the sum will be $25.20. But it adds up to $28. So we have to lower down the no. of coins.
Note that the no. of 30cent coins are 8 times that of 40cent coins. Start with 80 for 30cents with hopes that when totalled with 10 40-cent coins the sum will be $25.20. But it adds up to $28. So we have to lower down the no. of coins.
Date Posted:
6 years ago
Ty
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solving this type of questions in sets.
Date Posted:
6 years ago
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