Primary 6 W26 Q13

 

Remainder Theory

At first, John had some money. He spent 1⁄4 of it on a T-shirt and 2⁄5 of the remainder on a pair of shoes. After that, his parents gave him $120. The ratio of the total amount of money he had at the end to the amount of money he had at first was 5 : 4. How much money did John have at first?

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Primary 6 W26 Q12

Average involving Comparison Model

The average weight of my 4 brothers is 75 kg. My eldest brother is 72 kg and my second eldest brother is 66 kg. What is the weight of each of my other brothers given that one weighs 2 kg heavier than the other?

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Primary 6 W26 Q9 

 

Algebra involving Age 

Peter is (8k + 10) years old now. He has two children, Yenni and John. Peter is twice as old as Yenni now. John is 2k years younger than Yenni. How old will Peter be when John turns 18 years old?

Primary 5  W27 Q4

Ratio involving unchanged total with presumption

The total mass of 3 similar pineapples and a watermelon is 13.9 kg. The mass of the watermelon is 1.5 kg more than that of a pineapple. What is the mass of each pineapple? 

Primary 5 2018 Henry Park SA1 Paper 2 Q5

Mr. Lim bought 1 book, 1 magazine, and 1 file. The book and the file cost $28. The file and the magazine cost $16. The book costs 3 times as much as a magazine. What was the cost of one file? 

Primary 5 2018 Henry Park SA1 Paper 2 Q15

Tom bought some furniture at a shop. Tom spent 2⁄5 of his money on 6 similar chairs and 2 similar tables. He also spent 1⁄6 of his remaining money on a shoe rack and had $1225 left. Given that each table cost 4 times as much as each chair, (a) What is the cost of the shoe rack? (b) What would be the total cost of 2 such chairs and 2 such tables?

Primary 4  W27 Q2

Introduction to Stacking Models

2.The total mass of 3 similar pineapples and a watermelon is 13.9 kg. The mass of the watermelon is 1.5 kg more than that of a pineapple. What is the mass of each pineapple? 

Secondary 3 L21 Q3

Graphs sketching involving quadratic equations

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