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

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Presentation on theme: "Problem Involving Ratios (1) 16 April 2012 Yvonne Ong."— Presentation transcript:

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 – 2 = 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.


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