Su Lin, Belle and Dawn have saved some allowance to buy a gift for their father. The ratio of Su Lin's to Belle's savings is 2 : 5. The ratio of Belle's to Dawn's savings is 4 : 9. If Su Lin has saved $64, how much has Dawn saved?

Su Lin and Dawn shared some cakes in the ratio 1 : 4. If Dawn bought another 112 cakes, the new ratio of Su Lin's cakes to Dawn's cakes would be 4 : 17. How many cakes did Su Lin have?

Li Xin, Maddy and Caro have saved some allowance to buy a gift for their father. The ratio of Li Xin's to Maddy's savings is 2 : 7. The ratio of Maddy's to Caro's savings is 4 : 7. If Li Xin has saved $96, how much has Caro saved?

The ratio of Ali's savings to Jack's savings is 7 : 13. If Jack has $494 savings, how much must Jack give to Ali so that both will have the same amount?

Farah, Kate and Anna have saved some allowance to buy a gift for their father. The ratio of Farah's to Kate's savings is 3 : 4. The ratio of Kate's to Anna's savings is 8 : 9. Farah has saved $48. How much has Anna saved?

The ratio of Lincoln to Jason's savings was 2 : 7 at first. After Lincoln saved another $142 and Jason saved another $53, Lincoln had twice of Jason. How much did Lincoln have in the end?