Tiong Beng Sim
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Need help for part B. Tks much.

Replies 3
Pei Yuin Ong

Hi TB, happened to see this. The percentage discount is 100% - $320/$400 which is 20% discount. To counter check, can use the 20% in original prices ($2400 becomes $1920, $2000 becomes $1600).

5 years ago
Tiong Beng Sim

Tks PY. Why 320 /400?

5 years ago
Pei Yuin Ong

The difference in the original prices is $400. After discount, the differences in the prices is $320. The percentage discount applies to both the prices of the laptop as well as the difference in the laptop prices between the shops as this is proportional. So you can use 320/400 to know the percentage discount. It is like using PF ratio. You can predict the patient's PaO2 at another FiO2 if you know the PF ratio.

5 years ago

玮珊 王
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Hi. Anyone knows how to solve this using the available methods for P4? Thanks!

Replies 2
Joan Ong

Hope it helps.

5 years ago
玮珊 王

Joan OngThank you very much!☺

5 years ago

Cynthia Tan
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Thank you if you can explain question 9(b). Boy copied the answer (in green) from what teacher wrote on the board but does not understand...

Replies 5
Jasmine Yeo

5 years ago
Cynthia Tan

Thank you Jasmine :)

5 years ago
Yueh Mei Liu

5 years ago
Jasmine Yeo

U are welcome. 😊 Is this P5 Qn?

5 years ago
Cynthia Tan

Yes P5.

5 years ago

Cynthia Tan
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Can please help to explain Q5). The answer is in "green" but my boy does not really understand. Thank you.

Replies 3
Joey Wong

5 years ago
Yueh Mei Liu

5 years ago
Cynthia Tan

Thank you Joey & Yueh Mei :)

5 years ago

Kim Wong
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Not in e mind to think of the solutions to these 4 challenging qns. Thk u.

Replies 13
May Yee

In reference to your first question.

5 years ago
May Yee

In reference to your second question.

5 years ago
Cherie Tan

May I know if these questions are PRI 4?

5 years ago
Kim Wong

P5 qn

5 years ago
Kim Wong

Thks May yee for e reply. Let me digest them first

5 years ago
Cherie Tan

Thank. :)

5 years ago
Pieter Cronje

Answer to first problem is triangle area=288.

5 years ago
Kim Wong

Anyone can help in e last 2 qn?

5 years ago
Pieter Cronje

5 years ago
Nouf ALdossary

please, what the name of this book?

5 years ago
Seng Yee

For 3rd Question, $2 : $5 2/3 : 4/7 4/6 : 4/7 $2 has 6u $5 has 7u Their difference is 1u 10 of $5 can change 25 of $2, So, u-10 = 25 u = 35 Total money = 6ux2+7ux5 =47x35 = $1645

5 years ago
Kim Wong

Qns from the school... thks all, last qn still pending

5 years ago
Alice Lieu

5 years ago

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