Q&A - P5 Math

[MathIzzzFun]

redruby:

MathIzzzFun:

[quote=\"redruby\"]Tan and Ann have some money each. If Tan and Ann spend $12 and $16 each day respectively, Ann will still have $300 when Tan has spent all his money. If Tan and Ann spend $6 and $12 each day respectively, Ann will still have $120 when Tan has spent all his money. How much money did each have?

Have almost tried very hard solving this and finally gave up...Anybody to help me out?????

Tan spends $12, Ann spends $16:
Tan's spending : Ann's spending = 12 : 16 --> 3u : 4u
Tan's money --> 3u
Ann's money --> 4u + $300

Tan spends $6, Ann spends $12:
Tan's spending : Ann's spending = 6 : 12 --> 3u : 6u
Tan's money --> 3u
Ann's money --> 6u + $120

Ann's money:
4u + $300 = 6u + $120
1u --> $90

Ann's money --> 4 x $90 + $300 = $660
Tan's money --> 3 x $90 = $270


(number of days of spending in first case --> 22.5 days - \"precision spending\")

cheers.

Answer given is Tan=$120...Ann=$360....Is this answer wrong?????
Please clarify......[/quote]If the question is changed to :
Tan and Ann have some money each. If Tan and Ann spend $12 and $6 (not $16) each day respectively, Ann will still have $300 when Tan has spent all his money. If Tan and Ann spend $6 and $12 each day respectively, Ann will still have $120 when Tan has spent all his money. How much money did each have?\",

then
Tan's money --> $120
Ann's money --> $360

cheers.

[BigDevil]

MathIzzzFun:

BigDevil:

There are 45 peach tarts, 120 strawberry tarts and 150 chocolate tarts. If all the tarts are placed into the least number of boxes such that there are equal number of each type of tarts in each box, how many tarts are there in each box ?

this question is not structured properly... it would be more logical to replace \"least\" with \"maximum\".

cheers.

:hi5:

Someone posted this question at onsponge.com and I reproduced it here
to see if the experts here share my opinion.

My respond to this question at onsponge.com....

Least number of boxes?? Isn't the least number of box...1??

[redruby]

Thanks MathIzzzFun for your help.

[redruby]

Here is another one…


8 kg of Apples and 2 kg of Oranges cost $7 more than 3 kg of Apples and 6 kg of Oranges. What is the total cost of 2 kg of Apples and 3 kg of Oranges if 1 kg of Oranges costs $5?

[MathIzzzFun]

redruby:

Here is another one....


8 kg of Apples and 2 kg of Oranges cost $7 more than 3 kg of Apples and 6 kg of Oranges. What is the total cost of 2 kg of Apples and 3 kg of Oranges if 1 kg of Oranges costs $5?

Hope this is readable...

http://i50.tinypic.com/znld0m.png\">

Can you continue from here?

cheers.

[rrjan]

Thanks MAthIzzzFun for your kind explaination.


Can please help me with this qn too?

Cindy, Dawn and Elaine share a bag of beads. Cindy’s share is 3/8 of the number beads. Dawn’s share is 1/3 of what Cindy and Elaine received. What fraction of the beads is Elaine’s share?

[hardeshis]

A box half filled with tomatoes weighs 32 5/8kg. it weighs 38 3/4 kg when 2/3 filled with tomatoes. what is mass of empty box.

[cmm]

Pls help with this one...tks!!!!



http://i47.tinypic.com/abl0h.jpg\">

[hardeshis]

Benny,connie and daniel had $8600 altogether. benny spent 4/7 of his money, Connie spent $380, Daniel spent half the amount of what Benny has spent. If they have same amount of money left, how much more money did benny have than connie at first?

[MathIzzzFun]

cmm:

Pls help with this one...tks!!!!



http://i47.tinypic.com/abl0h.jpg\">

b)
number of squares in pattern N = N x (N-1) +1
eg. Pattern 5 --> 5 x 4 + 1 = 21
Pattern 10 --> 10 x 9 + 1 = 91

c) 2071 = 2070 + 1 = 46 x 45 + 1 --> pattern 46

cheers.