Kel's answer to QuickSilver's Primary 6 Maths Ratio Singapore question.
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(b) $1620 - $180 = $1440
Total sales (S) = $1440/2 = $720
Total sales (M) = $720 + $180 = $900
1 S = $720/80 = $9
1 M (after 25% discount) = $900/100 = $9
1M (original cost) = 100/75 x $9 = $12
1 M - 1 S (original) = $12 - $9 = $3 (Ans)
Total sales (S) = $1440/2 = $720
Total sales (M) = $720 + $180 = $900
1 S = $720/80 = $9
1 M (after 25% discount) = $900/100 = $9
1M (original cost) = 100/75 x $9 = $12
1 M - 1 S (original) = $12 - $9 = $3 (Ans)
Date Posted:
2 years ago
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