Shawn's answer to Rajesh's Primary 6 Maths Ratio Singapore question.
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Printer A takes 1 hour to print the same amount of paper as Printer B in 1.5 hours. Print A can print faster than B as it takes shorter time.
Paper each printer can print ratio
A:B
90:60
3:2
5u —> 18,000
1u —> 18,000/5=3,600
2u —> 3,600x2=7,200
3u —> 3,600x3=10,800
6h —> 10,800
1h —> 10,800/6=1,800
Paper each printer can print ratio
A:B
90:60
3:2
5u —> 18,000
1u —> 18,000/5=3,600
2u —> 3,600x2=7,200
3u —> 3,600x3=10,800
6h —> 10,800
1h —> 10,800/6=1,800
Date Posted:
3 months ago
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