Tutor MathsGuru: Ask me for your burning Maths questions!

[headache]

Question : FRom his pocket money, Victor spent thrice the amount that he could save every month. When he spent $20 less, he found he could save $40. How much was his pocket money?


Thank you Maths Guru!

[YLH88]

Hi Dharma,


Thank you very much for the help! I will look through the steps again

[YLH88]

Hi Dharma,


Just to clarify, for the Ken and Jim sweet and chocolate question, you denote p for Ken's share and u for Jim's share, am I right ?

After looking through the detailed steps you wrote, now I am able to understand the 2 questions liao....

I really admire both you and Mathsguru expertise in maths, wish I have your brain ....

Thank you!!

Mathsguru,
Thank you for the help given

I have more questions to ask, coming soon ... :?:

[Dharma]

YLH88:

Hi Dharma,


Just to clarify, for the Ken and Jim sweet and chocolate question, you denote p for Ken's share and u for Jim's share, am I right ?

After looking through the detailed steps you wrote, now I am able to understand the 2 questions liao....

I really admire both you and Mathsguru expertise in maths, wish I have your brain ....

Thank you!!

Mathsguru,
Thank you for the help given

I have more questions to ask, coming soon ... :?:

Hi YLH88

You’re correct. Used p (parts) for Ken’s share and u(units) for Jim’s share.

I’m glad that u are able to follow the steps.
You’ll realize after going thru a few problems ….its mainly to do with the logical thinking process. (it will be easy for u then)

[Muffins]

headache:

Question : From his pocket money, Victor spent thrice the amount that he could save every month. When he spent $20 less, he found he could save $40. How much was his pocket money?


Thank you Maths Guru!

Hi headache, I'll try to help you though i am a muffin, not a guru of maths!

From the question, we can see that he spends 3 units and saves 1 unit. So, if Victor spends 3 units - $20, he can save $40. So, the normal amount he saves is $40 - $20 = $20. $20 is 1 unit. He has 3 units + 1 unit = 4 units of money. So, $20 X 4 = $80.

Hope I helped!

[YLH88]

Hi,


Need your help with the below question :

At present, Ronald is 3 times as old as his sister. In 22 years’ time, Ronald’s age will be 19 years less than twice his sister’s age. How old is Ronald now ?

Thank you!!

[Dharma]

YLH88:

Hi,


Need your help with the below question :

At present, Ronald is 3 times as old as his sister. In 22 years' time, Ronald's age will be 19 years less than twice his sister's age. How old is Ronald now ?

Thank you!!

Now
Ronald : 3u
Sister : 1u

22 years time
Ronald : 2p – 19
Sister :1p

DIFFERENCE IN AGE BETWEEN 2 PERSONS ALWAYS THE SAME

3u – 1u = (2p -19) – 1p
2u = 1p-19

1p = 1u + 22
So,
2u = 1u + 22 – 19
1u = 3
Ronald’s age now = 3 x 3 = 9 (9 yrs old)

[Muffins]

Hi Dharma, ol' buddy. You kinda lost me there. Could you please explain your method to me? TIA. :thankyou:

[Dharma]

Muffins:

Hi Dharma, ol' buddy. You kinda lost me there. Could you please explain your method to me? TIA. :thankyou:

Hope this helps buddy.

1.\tConsider the ratio of their ages at present …. Ronald (3u) : Sister (1u)
2.\tCosndier the ratio of their ages in 22 yrs time …. Lets say sister’s age will be 1p, then Ronald’s age will be 2p – 19 [ Ronald’s age will be 19 yrs less than twice his sister’s age]
3.\tRemember that for ‘age’ questions …. Difference in age between 2 persons will ALWAYS be the SAME
4.\tNext, difference in ages at present (3u-1u = 2u) will be equal to the different in their ages in 22 years time ((2p -19) – 1p = 1p-19). So, we can say 2u = 1p -19
5.\tRonald’s sister will be (1u + 22) yrs old in 22 yrs time; which is equal to 1p.
6.\tSolve to find 1u. Multiply by 3 to get Ronald’s age now.

[Dad fm East]

Hi MathsGuru,

Need your help to solve 2 questions on Fractions. I know how to solve by algebra but do not want to confuse ds.

1) At first, Jonathan had 2/3 as many stamps as Kevan. After Jonathan bought another 8 stamps and Kevan lost 5 stamps, Jonathan now has 4/5 as many stamps as Kevan. Find the number of stamps Jonathan had at first.

2)At a school carnival, there were 520 more girls than boys. 1/8 of the girls and 1/5 of the boys left the carnival. In the end, there were 488 more girls than boys.
a) How many more girls left?
b) How many children were there in the carnival at the end?

Thanks in advance.