Tutor MathsGuru: Ask me for your burning Maths questions!

[MathIzzzFun]

blitz:

THank you for the model drawing. Will forward it to my child.

u r welcome.

cheers.

[YumYum]

Hi, can someone pls help me to solve this Qn:


Kailing and Jim had a total of $63. Kailing gave 0.3 of her share to Jim. Jim then gave 1/3 of the total amount of money he had to his brother. In the end, all the 3 children had the same amount of money. How much money did Kailing have at first? (answer: $36)

[MathIzzzFun]

YumYum:

Hi, can someone pls help me to solve this Qn:


Kailing and Jim had a total of $63. Kailing gave 0.3 of her share to Jim. Jim then gave 1/3 of the total amount of money he had to his brother. In the end, all the 3 children had the same amount of money. How much money did Kailing have at first? (answer: $36)

Hi

this was discussed before - http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=280&p=533462&hilit=Kailing+Jim#p533462

cheers.

[Neat]

Hi! Please help me with the following question:


At a party, the average number of sweets given to 24 boys was 25. The average number of sweets given to the girls was 20. If the average number of sweets given to the children was 22, how many girls were at the party?

Thanks

[Suz855]

At a party, the average number of sweets given to 24 boys was 25. The average number of sweets given to the girls was 20. If the average number of sweets given to the children was 22, how many girls were at the party?


25 - 22 =3 (average is reduced by 2 for the boys)
3x24 = 72 (excess to be shared by the girls to increase their average by 2)
72/2 = 36 (there are 36 girls)

Check 36x20 = 720

[Suz855]

At a party, the average number of sweets given to 24 boys was 25. The average number of sweets given to the girls was 20. If the average number of sweets given to the children was 22, how many girls were at the party?


25 - 22 =3
3x24 = 72 (excess to be shared by the girls to increase their average by 2)
72/2 = 36 (there are 36 girls)

Check
36x20 = 720
24x25= 600
(720 + 600) / 60 = 22

[Neat]

Suz855:

At a party, the average number of sweets given to 24 boys was 25. The average number of sweets given to the girls was 20. If the average number of sweets given to the children was 22, how many girls were at the party?


25 - 22 =3
3x24 = 72 (excess to be shared by the girls to increase their average by 2)
72/2 = 36 (there are 36 girls)

Check
36x20 = 720
24x25= 600
(720 + 600) / 60 = 22

[quote]Thanks a lot, Suz855[/quote]

[YumYum]

MathIzzzFun:

YumYum:

Hi, can someone pls help me to solve this Qn:


Kailing and Jim had a total of $63. Kailing gave 0.3 of her share to Jim. Jim then gave 1/3 of the total amount of money he had to his brother. In the end, all the 3 children had the same amount of money. How much money did Kailing have at first? (answer: $36)

Hi

this was discussed before - http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=280&p=533462&hilit=Kailing+Jim#p533462

cheers.

Thank you CA2 is approaching, I think that many mummies are getting their kids to do CA2 papers...this Qn is from a CA2 paper.

[MathIzzzFun]

YumYum:

MathIzzzFun:

[quote=\"YumYum\"]Hi, can someone pls help me to solve this Qn:


Kailing and Jim had a total of $63. Kailing gave 0.3 of her share to Jim. Jim then gave 1/3 of the total amount of money he had to his brother. In the end, all the 3 children had the same amount of money. How much money did Kailing have at first? (answer: $36)

Hi

this was discussed before - http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=280&p=533462&hilit=Kailing+Jim#p533462

cheers.

Thank you CA2 is approaching, I think that many mummies are getting their kids to do CA2 papers...this Qn is from a CA2 paper.[/quote]u r welcome.

cheers.

[Neat]

Hi


Please assist on the following question:

There were a total of 600 notes in a drawer. 70% of these notes were $2 notes and the rest were $5 notes. When the cashier took out some $2 notes, the percentage of the $2 notes decreased to 40%.

a) How many $2 notes did the cashier take out?
b) What was the total value of all the notes in the drawer in the end?

My ans for a) is 180 $2 notes and b) $1380, but the answers are incorrect.

Kindly help.

Thanks