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Question
primary 5 | Maths
| Fractions
3 Answers Below
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Please solve the problem
Date Posted: 3 years ago
Views: 336
P5
can use assumption instead of guess/check
assumed all 300pcs r 20¢
300 × $0.20 = $60
$90 - $60 = $30
$30 ÷ ($0.50-$0.20) = 100 (Ans)
check
300-100= 200
100×$0.50 + 200×$0.20 = $90 ✓✓✓
can use assumption instead of guess/check
assumed all 300pcs r 20¢
300 × $0.20 = $60
$90 - $60 = $30
$30 ÷ ($0.50-$0.20) = 100 (Ans)
check
300-100= 200
100×$0.50 + 200×$0.20 = $90 ✓✓✓
See 3 Answers
done
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Assumption
Date Posted:
3 years ago
Thanks a lot
welm
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If you want to have more similar questions to practice, you can join the following TG group
https://t.me/joinchat/lRE2mgGHARMyMTk1
done
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you can also use simultaneous equation to solve!!
Date Posted:
3 years ago
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