1. Problem Involving Ratios (1) 16 April 2012 Yvonne Ong

2. The ratio of the amount of money Sean had to the amount of money Manfred had was 4:1. After Sean has spent $26, he now has $2 less than Manfred. How much money did Sean have at first? The amount of money Manfred has remains constant.

3. The ratio of the amount of money Sean had to the amount of money Manfred had was 4:1. After Sean has spent $26, he now has $2 less than Manfred. How much money did Sean have at first? The amount of money Manfred has remains constant. Try solving this now.

4. The ratio of the amount of money Sean had to the amount of money Manfred had was 4:1. After Sean has spent $26, he now has $2 less than Manfred. How much money did Sean have at first? The amount of money Manfred has remains constant. BEFOREAFTER Sean : Manfred 4 : 1 Sean : Manfred S M S M 2

5. The ratio of the amount of money Sean had to the amount of money Manfred had was 4:1. After Sean has spent $26, he now has $2 less than Manfred. How much money did Sean have at first? The amount of money Manfred has remains constant. BEFORE Sean : Manfred 4 : 1 S M S M 2 AFTER 26 26 – 2 = 24 24 3 units 24 1 unit 24 ÷ 3 = 8 4 units 8 x 4 = 32 Sean has $32 at first. Ans: $32 The amount of money Manfred has remains constant.

6. The amount of money John and Jing Xian have are in the ratio of 2:3. If Jing Xian receives $12 from his dad, the total amount of money both of them have is $36. What is the new ratio of the amount John has to that of what Jing Xian has? The amount of money John has…….. Try solving this now on a piece of paper.