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1E Chapter 8 Ratio, Rate and Speed

Authored by Yuhui Toh

Mathematics

6th - 7th Grade

Used 1+ times

1E Chapter 8 Ratio, Rate and Speed
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11 questions

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1.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Simplify  1 12: 2 251\ \frac{1}{2}:\ 2\ \frac{2}{5}  

2.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Simplify  0.105 : 0.3500.105\ :\ 0.350  

3.

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3 mins • 1 pt

Given that  a : b = 5 : 8a\ :\ b\ =\ 5\ :\ 8  and  b : c = 3 : 10 b\ :\ c\ =\ 3\ :\ 10\  , find the ratio  a : b : ca\ :\ b\ :\ c  

4.

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5 mins • 1 pt

The monthly salaries of Jack and Jill are in the ratio 5 : 9. The monthly salary of Jack is $3200 more than that of Jill. Find the monthly salary of Jill.

5.

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5 mins • 1 pt

The exchange rate between Singapore dollars (SGD) and US dollars (USD) is 1 SGD = 0.74 USD. The exchange rate between Australian dollars (AUD) and US dollars (USD) is 1 AUD = 0.71 USD.

Find the exchange rate between SGD and AUD in AUD/SGD. Leave your answer in 3 decimal places.

6.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

A man took  4 124\ \frac{1}{2}  hours to drive 360 km from Singapore to Kuala Lumpur. He used 37.5 litres of petrol for the journey. Find his average speed in km/h

7.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

A man took  4 124\ \frac{1}{2}  hours to drive 360 km from Singapore to Kuala Lumpur. He used 37.5 litres of petrol for the journey. Find the petrol consumption rate in km/l

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