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Tiong Beng Sim

Asked 9 years ago

SG Primary 6 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).

6 years ago

Tiong Beng Sim

Tks PY. Why 320 /400?

6 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.

6 years ago

玮珊王

Asked 9 years ago

SG Primary 4 Number and Algebra

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

Replies 2

Joan Ong

Hope it helps.

6 years ago

玮珊王

Joan OngThank you very much!☺

6 years ago

Cynthia Tan

Asked 9 years ago

SG Primary 5 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

6 years ago

Cynthia Tan

Thank you Jasmine :)

6 years ago

Yueh Mei Liu

6 years ago

Jasmine Yeo

U are welcome. 😊 Is this P5 Qn?

6 years ago

Cynthia Tan

Yes P5.

6 years ago

Cynthia Tan

Asked 9 years ago

SG Primary 5 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

6 years ago

Yueh Mei Liu

6 years ago

Cynthia Tan

Thank you Joey & Yueh Mei :)

6 years ago

Kim Wong

Asked 9 years ago

SG Primary 5 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.

6 years ago

May Yee

In reference to your second question.

6 years ago

Cherie Tan

May I know if these questions are PRI 4?

6 years ago

Kim Wong

P5 qn

6 years ago

Kim Wong

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

6 years ago

Cherie Tan

Thank. :)

6 years ago

Pieter Cronje

Answer to first problem is triangle area=288.

6 years ago

Kim Wong

Anyone can help in e last 2 qn?

6 years ago

Pieter Cronje

6 years ago

Nouf ALdossary

please, what the name of this book?

6 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

6 years ago

Kim Wong

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

6 years ago

Alice Lieu

6 years ago

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