Tutor MathsGuru: Ask me for your burning Maths questions!

[Brenda10]

tinasen:

Sorry.. Haven't used the forum so started this as new topic instead of posting it in this forum. Now have re-posted my question here. Sorry for the inconvenience.


Dear Maths Guru,

I badly need help to solve this homework problem for my son.

A basket with 65 sweets has a mass of 3200g. The same basket with 40 sweets has a mass of 2125g. Each sweet has the same mass. What is the mass of the basket.

Your help is greatly appreciated.
Thanks
Tinasen

Hi, I'm not mathsguru but hope the following working can help:

3200g - 2125g = 1075g (To find out the mass of 25 sweets)
1075g / 25 = 43g (Mass of one sweet)
2125g - (40 x 43g) = 405g

Hence, the mass of the basket is 405g.

[tinasen]

Hi Brenda10, Eddow

Thanks for your help at this hour.
I got it now.
-Tinasen

Brenda10:

tinasen:

Sorry.. Haven't used the forum so started this as new topic instead of posting it in this forum. Now have re-posted my question here. Sorry for the inconvenience.

Dear Maths Guru,

I badly need help to solve this homework problem for my son.

A basket with 65 sweets has a mass of 3200g. The same basket with 40 sweets has a mass of 2125g. Each sweet has the same mass. What is the mass of the basket.

Your help is greatly appreciated.
Thanks
Tinasen

Hi, I'm not mathsguru but hope the following working can help:

3200g - 2125g = 1075g (To find out the mass of 25 sweets)
1075g / 25 = 43g (Mass of one sweet)
2125g - (40 x 43g) = 405g

Hence, the mass of the basket is 405g.

[tinasen]

I got it. Thank you Eddow.

Eddow:

basket + 65 sweets = 3200
basket _ 40 sweets = 2125

So if you take 3200- 2125 = 1075, the result will be for the 25 sweets
then, 1 sweet will be 1075 divide by 25 = 43g

take 43 x 40 sweets =1720g
2125 - 1720 = 405g (mass of basket)

[lin_bb2000.021981yahoo.021981com.021981sg]

Dear Maths Guru-

Have been finding help all over but i cannot solve this. Can you please help?

:? Amelia, Beatrice and Casey had $738 at first. After Amelia gave 3/8 of her money to Beatrice, Beatrice found that she had $18 less than Amelia. If Casey had 7/10 of what Amelia had left, how much did Beatrice have at first?

[iFruit]

LL:

Dear Maths Guru-

Have been finding help all over but i cannot solve this. Can you please help?

:? Amelia, Beatrice and Casey had $738 at first. After Amelia gave 3/8 of her money to Beatrice, Beatrice found that she had $18 less than Amelia. If Casey had 7/10 of what Amelia had left, how much did Beatrice have at first?

Assume at the end, Amelia = 10u.

Then Casey = 7u, Beatrice = 10u -18

10u + 7u + 10u - 18 = 738

27u = 756---> u = 28

So Amelia at the end = 10u = 280

Beatrice at the beginning = 280 - 3/8 x 448 -18 = 280 - 168 - 18 = 94

HTH.

[Yu Xuan]

LL:

Dear Maths Guru-

Have been finding help all over but i cannot solve this. Can you please help?

:? Amelia, Beatrice and Casey had $738 at first. After Amelia gave 3/8 of her money to Beatrice, Beatrice found that she had $18 less than Amelia. If Casey had 7/10 of what Amelia had left, how much did Beatrice have at first?

Not a guru, but this is my solution;

At first
Amelia --> 16 units

After transfering 3/8 to Beatrice
Amelia --> 16u - 6u = 10u
Beatrice --> 10u - 18
Casey --> 7/10 * 10u = 7u

Working backward, Beatrice started off with;
10u - 18 - 6u --> 4u - 18

10u + 10u + 7u --> 738 + 18
1u --> 756 / 27 = 28

Beatrice at first --> 4*28 - 18 = $94

Is that the answer?

[sall]

Hi. My answer is 94, method slightly diff, but I'm sure this is the answer.

[Dharma]

sall:

Hi. My answer is 94, method slightly diff, but I'm sure this is the answer.

At last
Amelia : 16u – 6u = 10u
Beatrice : 10u - $18
Casey : 7u

27u - $18 = $738
27u = $756
1u = $28

Amount Beatrice had at first = 10($ 28 ) - $18 - 6($28 ) = $94

[wkong]

Hi All,


Need help for the following:

Jenny offered 23 dolls and 17 teddy bears at a discount of 15% for each item. Her total collection for all the items sold was $819.40. Her original sale price of each doll was $7 less than each teddy bear. What was the amount collected from the sale if all the teddy bears? (express your answer to the nearest dollar)

Thanks,
wkong

[charsen]

Hi Mathguru,


Kindly help me with my math problem.
Colin and Rosdin had the same amount of pocket money. Each day, Colin spent $12 and Rosdin spent $15. When Rosdin had $18 left Colin had 5 times as much money left as Rosdin. How much was each boy’s pocket money?

It will be of great help if you show me the solution by model method.

TIA
charsen