Q&A - P4 Math

[numeric]

MathIzzzFun:

Poppet:

Hi there,


Anyone can help me on following 5 very challenging questions, thanks in advance :boogie:

Qn 4. Ali had $190 more than Baba at first. After Baba had spent $50, Ali had 4 times as much money as Baba had left. How much did Ali have at first?

http://i47.tinypic.com/242ajq1.png\">

After Baba spent $50,
Ali would have ($190 + $50) = $240 more than Baba

$240/3 = $80
Ali's money --> $80 x 4 = $ 320

cheers.

If you want to see a coloured step-by-step representation:
http://i49.tinypic.com/dha6ix.jpg\">

[numeric]

MathIzzzFun:

Poppet:

Hi there,


Anyone can help me on following 5 very challenging questions, thanks in advance :boogie:


Qn 5. Charlie and Mr Brown had the same number of buttons. If Charlie gives 500 buttons to Mr Brown, Mr Brown would have 6 times as many buttons as Charlie. How many buttons did Charlie have at first?

http://i49.tinypic.com/ipcu1y.png\">

After giving 500 buttons to Mr Brown, Charlie would have 500x 2 = 1000 less buttons than Mr Brown.

Charlie's buttons left = 1000/5 = 200
Charlies's buttons at first = 200 + 500 = 700

cheers.

If you want to see a coloured step-by-step representation:
http://i45.tinypic.com/33yltsw.jpg\">

[Poppet]

Raymond had 60 marbles more than Nick.After Nick had given 35 marbles to Raymond, Raymond had twice as many marbles as Nick.How many marbles did Nick have at first?



Can anyone solve this question? :boogie: :?:

[smileplease]

You must post this Question in Q&A - P4 Math, then you will get your answer. Or you might find similar question there.

[Poppet]

David had 45 more stickers than Solomon at first.After Solomon lost 15 stickers, David had three times as many stickers as Solomon.How many stickers did David have at first?


Can somebody help solve this question? :?:

[MathIzzzFun]

Poppet:

Raymond had 60 marbles more than Nick.After Nick had given 35 marbles to Raymond, Raymond had twice as many marbles as Nick.How many marbles did Nick have at first?



Can anyone solve this question? :boogie: :?:

http://i45.tinypic.com/6pc4e0.png\">

cheers.

[cftan]

Janet thinks of a number that is more than 40 and less than 60.

1,2,4 and 7 are some of its factors. What is the number?

[Yerdua]

list all the even numbers first

42,44,46,48,50
52,54,56,58

from the list, numbers divisible by 4
44,48,56

from the list, number divisble by 7
56 (ans)

[MathIzzzFun]

Poppet:

David had 45 more stickers than Solomon at first.After Solomon lost 15 stickers, David had three times as many stickers as Solomon.How many stickers did David have at first?


Can somebody help solve this question? :?:

http://i47.tinypic.com/a32rrd.png\">

cheers.

[Maths Olympiad Tutor]

cftan:

Janet thinks of a number that is more than 40 and less than 60.

1,2,4 and 7 are some of its factors. What is the number?

We can disregard one, since it is a factor of all numbers

We can disregard 2, because all multiples of 4 are multiples of 2.

Between 40 and 60, there are only 3 numbers that are factors of 7 - 42, 49 and 56.

56 is the only number that has factors of 4 and 7.