Q&A - PSLE Math

[tianzhu]

small:

I will interpret as the both men were painting for a total duration of 5 hours, so the answer is 6 hours???

The answer is spot on if based on your interpretation.However, the given answer is the same as what Dharma has interpreted.

I am confused.Consider these two sentences.

Mr Yoma and Mr Ula together took 5 hours to paint a room.

Mr Yoma and Mr Ula took 5 hours to paint a room.

Do they have the same meaning in context?Or, do they mean different things?

[Dharma]

tianzhu:

small:

I will interpret as the both men were painting for a total duration of 5 hours, so the answer is 6 hours???

The answer is spot on if based on your interpretation.However, the given answer is the same as what Dharma has interpreted.

I am confused.Consider these two sentences.

Mr Yoma and Mr Ula together took 5 hours to paint a room.

Mr Yoma and Mr Ula took 5 hours to paint a room.

Do they have the same meaning in context?Or, do they mean different things?

From your question, I interprete as with both Mr Yoma and Mr Ula in a room where they (together) took 5 hrs to complete painting the whole room. That's my inpretation of your 1st sentence ...\"together took\"

The 2nd sentence means the same as the 1st one ...I think!!!!

[small]

Hi Dharma,


Once again thanks a lots for the solution…

[Tang]

P6 pupils may want to try the Maths Questions at Uncle Observer's blog


http://prischoolmaths.blogspot.com/

[Denise]

Jack bought some pens and erasers for a total of $100.10.

He spent $9.10 more on the pens than the erasers.
Each pen costs $3.70 more than each eraser.
Jack bought 6 times more ereasers than pens. How much does each pen cost?

[mrswongtuition]

I'm not sure if this is right, but based on my interpretation of the question:


Quantity of P:E is 1:7
P [__]
E [__][__][__][__][__][__][__]

Price of P & E (in total)
P [_______][_$9.10_] ````` } Total
E [_______] ````````````` }$100.10

By Price:
$100.10 - $9.10 = $91
2u -> $91
1u -> $45.50

Since there are 7 units of erasers, each unit of erasers will cost $45.50/7 = $6.50

The price of the pens is $45.50 + $9.10 = $54.60

Price of pens take away the price of 1 unit of erasers (to find the difference in amount if the same amount of pens & erasers were bought):
$54.50 - $6.50 = $48.10

Since each pen is more expensive than each eraser by $3.70,
$48.10/$3.70 = 13 pens

To find the price of each pen:
$54.60/13pens = $4.20

[Dharma]

Denise:

Jack bought some pens and erasers for a total of $100.10.

He spent $9.10 more on the pens than the erasers.
Each pen costs $3.70 more than each eraser.
Jack bought 6 times more ereasers than pens. How much does each pen cost?

Its correct

[Dharma]

mrswongtuition:

I'm not sure if this is right, but based on my interpretation of the question:

Sorry ...the answer is right

[fxchow]

Hi,


Can someone help to solve this problem. TIA

Allen, Raymond and Tom ran at a speed of 5km/h, 6km/h and 7km/h respectively.
They ran along the same route and started at 6.00 am, 6.30 am and 7.00 am respectively.
When Raymond passed Allen, he gave Allen a message to pass to Tom.
What time will Tom receive the message?

[Denise]

ack bought some pens and erasers for a total of $100.10.

He spent $9.10 more on the pens than the erasers.
Each pen costs $3.70 more than each eraser.
Jack bought 6 times more ereasers than pens. How much does each pen cost?
How many pens and how erasers did he buy then?