oosh:

Hi,


Pls help to solve this question:

Jimmy and Tony drove 45Km from the library to the swimming pool. Tony started his journey 24mins later than Jimmy. Both of them reached the swimming pool at the same time. If Jimmy's average speed was 50km/h, find Tony's average speed (Ans: 90Km/h)

TIA

Jimmy : 50km/h = 50km/60min
45/50x60min = 54 min (jimmy travelled for 54 min)

Tony travelled for 54-24 min = 30 min

45km/30min = 45km/0.5h = 90km/h

ksi:

Not easy to see that both sides divisible by 13 to reduce to 538 and 461 leh.....at least not for old mummy like me...


6994 ABC = 5993 DEF

538 ABC = 461 DEF

Trying out a few more numbers, I am sure everyone can get the answer too

iFruit:

mujin:

[quote=\"mujin\"]
Let me try:

ABCDEF = 461538

My working :

ABCDEF x 7 = DEFABC x 6

[(ABC x 1000) + DEF] x 7 = [(DEF x 1000) + ABC] x 6

7000 ABC + 7 DEF = 6000 DEF + 6 ABC

6994 ABC = 5993 DEF

538 ABC = 461 DEF

538 (461) = 461 (538)

whereby (461) = (ABC) and
(538) = DEF

so.. ABCDEF = 461538

Hope I am right

Nice One :)[/quote]Thanks

mujin:

Maths Hub:

Hi Parents and Students,


Here's a Challenging question for all of you to solve:

Find the 6 digit number ABCDEF
such that 7 x ABCDEF = 6 x DEFABC where DEFABC is another 6 digit number.

Different letters stand for different single-digit whole numbers.

Have a fun time solving !

Let me try:

ABCDEF = 461538

My working :

ABCDEF x 7 = DEFABC x 6

[(ABC x 1000) + DEF] x 7 = [(DEF x 1000) + ABC] x 6

7000 ABC + 7 DEF = 6000 DEF + 6 ABC

6994 ABC = 5993 DEF

538 ABC = 461 DEF

538 (461) = 461 (538)

whereby (461) = (ABC) and
(538) = DEF

so.. ABCDEF = 461538

Hope I am right

Maths Hub:

Hi Parents and Students,


Here's a Challenging question for all of you to solve:

Find the 6 digit number ABCDEF
such that 7 x ABCDEF = 6 x DEFABC where DEFABC is another 6 digit number.

Different letters stand for different single-digit whole numbers.

Have a fun time solving !

Let me try:

ABCDEF = 461538

The Alternative Story:

mujin:

Hi TAS,


We are confused about the differences between past tense and past continuous tense when used in composition. Could you advise us if there is any rule that we can adhere, so that we can distinguish the differences and its applications.

Thank you.

Hi mujin,

The past tense refers to an action that has happened in the past
and it is completed.

The past continuous tense refers to an action that has happened in
the past but the main difference is that it happened for a duration
of time.

Eg:

I slept through the show and I did not know that my friends
had left the cinema.

(Here, the emphasis is on the reason and result, the reason
being you were sleeping, the result being you did not know your
friends had left, the emphasis is not on the duration of the action)

VS

I was sleeping through the show when the bell rang.

(Here, the emphasis is on the duration of the time
that you had spent sleeping and while doing so, the bell rang)

TAS

Hi TAS,

Thanks for the explanation (':D')

Mujin

Hi TAS,


We are confused about the differences between past tense and past continuous tense when used in composition. Could you advise us if there is any rule that we can adhere, so that we can distinguish the differences and its applications.

Thank you.

The Alternative Story:

[quote]Hi TAS, need some help from you


1. If today ______ Tuesday, I would be able to give you a special discount on hotdogs.
is / are / was /were

Hi mujin,

The answer is 'were' as you are stating the impossible, today is not
Tuesday, if it were, then a special discount would already be given.

For conditionals, when they are stating the impossible, the verb
'were' is used instead of 'was'.

Eg: (stating the impossible)

- If I were you, I would not give my handphone number away.

- If I were Steve Jobs, I would give ipods to all my friends.
[quote]2. They were not giving up, _________ tedious the task was.
no matter / regardless / nevertheless / however[/quote]a) The answer is 'however'. 'However' is used in this context when
it is followed by an adjective.

Eg:

- I kept failing however hard(adjective) I worked.

b)'No matter' is used when there is the word 'how', 'what', 'when'
'who' after it.

Eg:

- I would give up no matter how hard it seems.

c) 'Nevertheless' is followed by a sentence, not a phrase. For
'no matter' and 'however', they are followed by phrases.

Eg:

- He kept doing poorly in his examinations, nevertheless, he would not
give up. ('he would not give up' can be a sentence)

d) 'Regardless' is followed by the word 'of'

Eg:

- I will follow him regardless of the risks.
[quote]3. You can buy branded goods ________ there than in Singapore.
cheaply / cheap / cheaper / more cheaply[/quote]The answer is 'more cheaply'.

'Cheap', 'cheaper' are adjectives. They are used to describe a noun.

Eg:

This bag is cheaper than the other one. (describing a noun- bag)

'Cheaply', 'more cheaply' are adverbs. They are used to describe
a verb.

Eg:

I can shop cheaply in Thailand. (describing a verb - shop)

Hence, the answer is 'more cheaply' as you are describing a verb - buy.
And you are comparing 2 places so 'more cheaply' and not 'cheaply'
is used.
[quote]4, We guessed that they had not left their shop as the door was still ________
open / opened/ opening / opens



Thanks[/quote]The answer is 'open'.

To help you to understand, here are 2 examples:

- The shop is opened by the Lims (passive form of verb- open. It shows
that the Lims opened the shop)

- The shop is open for business (the 'open' here is an adjective, it is
describing the state of the shop)

In your question, you are describing the state of the door-open, and not
showing the action of the door being opened by somebody else, hence
the answer is 'open'.

Hope this helps:D

TAS[/quote]
Hi TAS,

Thanks for the solution.
Is indeed very comprehensive and concise.

Certainly very helpful.

Mujin

Hi TAS, need some help from you


1. If today ______ Tuesday, I would be able to give you a special discount on hotdogs.
is / are / was /were

2. They were not giving up, _________ tedious the task was.
no matter / regardless / nevertheless / however

3. You can buy branded goods ________ there than in Singapore.
cheaply / cheap / cheaper / more cheaply

4, We guessed that they had not left their shop as the door was still ________
open / opened/ opening / opens

Thanks

Hi TAS, need some help from you


1. If today ______ Tuesday, I would be able to give you a special discount on hotdogs.
is / are / was /were

2. They were not giving up, _________ tedious the task was.
no matter / regardless / nevertheless / however

3. You can buy branded goods ________ there than in Singapore.
cheaply / cheap / cheaper / more cheaply

4, We guessed that they had not left their shop as the door was still ________
open / opened/ opening / opens

Thanks