Chua Choon Hock
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Another question I need help. Thanks !

Replies 2
KH Puah

Assume Kelly got all answers correct, then she will have 30 x 5 = 150 marks. Diff 150 and 94 = 56 For each correct answer converted to a wrong answer there will be a deduction of (5+2) = 7 marks 56/7 = 8, therefore Kelly made 8 mistakes.

6 years ago
Chua Choon Hock

Thanks Puah

6 years ago

Vivian Ang
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Can help on this question. Thanks.

Replies 1
KH Puah

Tank capacity = 20x10x30/1000 = 6 litres Nett water flow into tank = 6-4 = 2 litres per minute Time taken to fill tank = 6/2 = 3 minutes

6 years ago

Vivian Ang
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Can help on this question. Thanks.

Replies 6
Zhong Shu Hao

Whats the volume of the tank? In litres

6 years ago
Vivian Ang

40×20×50.In litres Zhong Shu Hao

6 years ago
Zhong Shu Hao

Whats the final value? Vivian Ang

6 years ago
Zhong Shu Hao

And ur ans must be in litres, not millilitres

6 years ago
KH Puah

Volume of Water to fill half tank = 40x20x25/1000=20 litres Nett water flow into tank = 3 + 2 = 5 litres per minute Time taken to fill half tank = 20/5 = 4 minutes

6 years ago
Tan Weiqiang

I did a video on it yesterday. Here's the link https://www.youtube.com/watch?v=_34NAXSS8zM

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Making it visual...

Replies 1
Candy Chan

Thanks Adrian Ng!

6 years ago

Regina Lim
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Hi can someone please help with this question

Replies 0

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