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Ratio

Before-and-after ratio, transfers and equal-after-giving problems — the classic Singapore bar-model questions.

Ratio · constant total · P6At a school carnival, Ali and Mei Ling had some game coupons. At first, the ratio of Ali's coupons to Mei Lin…Ratio · three quantities · P6At a school funfair, Ali, Mei Ling and Raju collected money for charity. The amounts they collected were in t…Ratio · unchanged total and common parts · P6Mei Ling and Raju had some school funfair coupons in the ratio 7 : 5. Raju then gave 48 coupons to Mei Ling. …Linked ratios · common units · P6Ali, Mei Ling and Raju collected 420 bookmarks altogether. The number of bookmarks Ali had : the number of bo…Ratio · constant age difference · P6The ratio of Ali's father's age to Ali's age now is 7 : 2. In 6 years' time, the ratio of their ages will be …Ratio · change after adding water · P6Raju made a jug of sweet drink by mixing sugar and water. The ratio of the mass of sugar to the mass of water…Ratio · before and after with multiples · P6At first, the ratio of Ali's money to Raju's money was 5 : 3. Later, Ali spent $24 on school supplies, while …

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