Level 1 PSLE
In a group of 70 children, 49 are girls. What is the ratio of the number of boys to the number of girls?

Level 1 PSLE
There are 45 biscuits in a box. 27 of them have raisins while the rest are plain. What is the ratio of the number of plain biscuits to that of raisin biscuits in the box?

Level 2
0.7 of Ian's money is equal to 80% of Sean's money. What is the ratio of Ian's money to Sean's money?

Level 3
Eva and Fiona went shopping with a total of $200. After Eva spent ³₄ of her money and Fiona spent $46, the ratio of Fiona's money became 3 times as much as Eva's money. Find the ratio of Eva's money to Fiona's money at first.

Level 3
Three cartons, A, B and C, contained 382 marbles. Hazel added some marbles into Carton A and the number of marbles in Carton A tripled. He took out half of the number of marbles from Carton B and added another 98 marbles into Carton C. As a result, the ratio of the number of marbles in Carton A, Carton B and Carton C became 6 : 2 : 9. What was the ratio of the number of marbles in Carton B to the total number of marbles in Carton A and Carton C at first? Give the answer(s) in its lowest term.

Level 2
⁶₇ of Sam's money is twice as much as Jason's money. What is the ratio of Sam's money to Jason's money?

Level 3
Three women, Mrs Zhang, Mrs Lin and Mrs Yap went on a shopping spree. 30% of Mrs Zhang's spending is equal to ¹₅ of Mrs Lin's spending. Mrs Yap's spending is 40% more than Mrs Lin's. If Mrs Lin spends another $804, she will spend the same amount of money as Mrs Yap.

1. Find the ratio of Mrs Zhang's spending to Mrs Lin's to Mrs Yap's.
2. How much did Mrs Zhang spend?

Level 3
England and Thailand took part in Youth Games. From England, the ratio of the number of male supporters to the number of female supporters was 1 : 3. From Thailand, the ratio of the number of male supporters to the number of female supporters was 3 : 5. The total number of supporters from England was ²₅ the total number of supporters from Thailand.

1. What was the ratio of the number of male supporters from England to the total number of male supporters from both countries? Express the answer(s) in the simplest form.
2. After 1956 male supporters from both countries left, the percentage of all the female supporters became 74%. How many more female supporters from Thailand than England were there at first?