Tutor MathsGuru: Ask me for your burning Maths questions!

[ChiefKiasu]

Suz855:

Hi,


Propose units solution ...

Annie\t\tBrenda
3u\t\t9u +360
3u\t\t3u + 1320
6u = 1320 – 360
1u = 960 ÷ 6 = 160
Annie has 3 x 160 = 480\t

Annie could not have $480 to begin with. In Scenario 2, Annie spends $180 per day and is left with $0 at the end of N days. $480/$180 = 2 2/3 <> a whole number. So $480 cannot be the answer.

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[ChiefKiasu]

http://i54.tinypic.com/21l9anq.png\">

[ChiefKiasu]

http://i52.tinypic.com/2rraofn.png\">

[ChiefKiasu]

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[ChiefKiasu]

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[Chan09]

Hi all,

Need some help on this question
A and B each have some sweets.
If A eats 6 sweets per day and B eats 3 per day, A would have 24 sweets left by the time B eats up all his sweets.
If A eats 3 per day and B eats 6 per day, A would have 51 sweets left by the time B eats up all her sweets.
How many sweets does each of them have?

Ans: A is 60 and B is 18

[ChiefKiasu]

Chan09:

Hi all,

Need some help on this question
A and B each have some sweets.
If A eats 6 sweets per day and B eats 3 per day, A would have 24 sweets left by the time B eats up all his sweets.
If A eats 3 per day and B eats 6 per day, A would have 51 sweets left by the time B eats up all her sweets.
How many sweets does each of them have?

Ans: A is 60 and B is 18

This is the exact same class of questions as in:

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?p=429633#p429633

http://i51.tinypic.com/2ex2d01.png\">

[wdiong]

Hi, I need help with this P6 question:

The ratio of the number of twenty cent coins to the number of $1 coins in a box was 5:2. Two $1 coins were taken out and exchanged for twenty cent coins and the coins were then put back into the box. The ratio of the number of twenty cent coins to the number of $1 coins became 3:1. How much money was there in the box?

Thanks!

[aiong]

Dear MathsGuru


Need your help on this math question :-
Kelvin had some $2 noted and $5 noted.
He had a total of $76.
He had 4 more $5 notes than $2 notes.
How many $2 notes did he have?

Thank you

[lizawa]

aiong:

Dear MathsGuru


Need your help on this math question :-
Kelvin had some $2 noted and $5 noted.
He had a total of $76.
He had 4 more $5 notes than $2 notes.
How many $2 notes did he have?

Thank you

Use ratio and be sure to differentiate the number of notes from the amount.

$2 : $5
# ratio 1u : 1u + 4
Amount ratio 2u : 5u + 20
Total amount -> 7u + 20 = 76
1u = 8
# of $2 notes = 8.