Q&A - P5 Math

[Essential]

Thank you Tian Zhu, please help me with one more question that I got stuck. Q1)

There were 182 red, blue and green beads in the box. 26 green beads were removed from the box and the ratio of the number of the red beads to the number of blue beads to the number of green beads became 4:3:5. The some yellow beads were added and the ratio of the number of green beads to the number of yellow beads was 13:9. a) what was the ratio of the number of red beads to the number of blue beads to the number of green beads at first? B) HOW Many beads were in the box at the end?

[Bunny27]

Pls help in this ques:

Mrs Lim spent $1080 on curtains. She then spent 1/7 of her remaining money on a vaccum cleaner. She had 3/5 of her money left. How much money did she have at first?

Thank you !



quote=\"Suz855\"]Moderator's Note: Please use this thread to ask for help on specific questions. Please refrain from out of topic chatter in this thread to make it easier for the community to find the answers they need.

Pls help, thanks


http://i937.photobucket.com/albums/ad214/suz855/areaoftriangle-1.gif\">

:?[/quote]

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Essential:

Thank you Tian Zhu, please help me with one more question that I got stuck. Q1)

There were 182 red, blue and green beads in the box. 26 green beads were removed from the box and the ratio of the number of the red beads to the number of blue beads to the number of green beads became 4:3:5. The some yellow beads were added and the ratio of the number of green beads to the number of yellow beads was 13:9. a) what was the ratio of the number of red beads to the number of blue beads to the number of green beads at first? B) HOW Many beads were in the box at the end?

Hope this helps, solution done by my son.

After removing 26 green beads; ratio of Red : Blue : Green is 4U:3U:5U

182-26 = 156

(4+3+5) units = 156 beads
12 units = 156
1 unit = 13

a) So at first:
Red : Blue : Green
4U : 3U : 5U + 26
52 : 39 : 91
4 : 3 : 7

The ratio of the number of red beads to the number of blue beads to the number of green beads at first was 4:3:7
\t\t\t\t\t
b) After some yellow beads were added and the ratio of the number of green beads to the number of yellow beads was 13:9

From above, Green beads is 65

13 parts = 65
1 part = 5 beads

so Yellow is 9 parts

9 parts = 9 x 5 = 45 beads

156 + 45 = 201 beads

Thew were 201 beads in the box at the end.

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Bunny27:

Pls help in this ques:

Mrs Lim spent $1080 on curtains. She then spent 1/7 of her remaining money on a vaccum cleaner. She had 3/5 of her money left. How much money did she have at first?

Thank you !

HTH...
Please use MD to solve the question.

1080 +[VC] [ ] [ ] [ ] [ ] [ ] [ ]

from above:
3/5 of her money = 6 units
1/5 of her money = 2 units

She spent 2/5 of her money on curtains and a vaccum cleaner.

2/5 of her money = 4 units
4U = 1080 +1U
3U = 1080
1U = 360

10U = 360 x 10 = 3600

Mrs Lim had $3600 at first.

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Bunny27:

Pls help in this ques:

Mrs Lim spent $1080 on curtains. She then spent 1/7 of her remaining money on a vaccum cleaner. She had 3/5 of her money left. How much money did she have at first?

Thank you !

HTH...
Solution provided by my son.

6/7 of her remaining money = 3/5 of her total money
1/7 of her remaining money = 1/10 of her total money

1-3/5-1/10 = 3/10

She used 3/10 of her total money on curtains :

3/10 of her total money = 1080
1/10 of her total money = 360
10/10 of her total money = 3600

Mrs Lim had $3600 at first.

.

[Bunny27]

Thank u for the help!

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small:

[quote=\"Bunny27\"]Pls help in this ques:
Mrs Lim spent $1080 on curtains. She then spent 1/7 of her remaining money on a vaccum cleaner. She had 3/5 of her money left. How much money did she have at first?

Thank you !

HTH...
Solution provided by my son.

6/7 of her remaining money = 3/5 of her total money
1/7 of her remaining money = 1/10 of her total money

1-3/5-1/10 = 3/10

She used 3/10 of her total money on curtains :

3/10 of her total money = 1080
1/10 of her total money = 360
10/10 of her total money = 3600

Mrs Lim had $3600 at first.

.[/quote]

[Essential]

Thank u Tian Zhu . U are great! Many thanks

[Essential]

Thank u Tian Zhu . U are great! Many thanks

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Hi Bunny27,


U are welcome…

[small]

Please help and many thanks in advance.


Question:
Lin and Kim baked some cookies.If Lin sells 30 cookies and Kim sells 60 cookies each day, Lin would have 182 cokkies left and Kim would have sold all of her cookies. If Lin sells 60 cookies and Kim sells 30 cookies each day, Lin would have 56 cookies left and Kim would have sold all her cookies. What is the ratio of the amount of cookies than Lin baked to the amount of cookies Kim baked?