Q&A - P4 Math

[MathIzzzFun]

danishcookies:

This qustion is tricky to me. Pls help. Thanks


Initially Joshua the millionaire had 5 cars and 10 motorcycles. Then he bought more vehicles. He bought some vans and bicycles. There are now 95 vehicles and 260 wheels. how many cars, motorcycles, vans and bicycles are there now?

Hi

Solve the 2nd part of the question as \"cows and chickens' type of question to find number of 2 wheeler & number of 4 wheeler. The difference with the original number will give the number of bicycles (2 wheeler) and vans (4 wheeler).

Number of 2 wheeler in the end = (95x4-260)/2 = 60,
so number of 4 wheeler in the end = 95 - 60 = 35

Number of vans bought = 35-5 = 30
number of bicycles bought = 60 - 10 = 50

cheers.

[Chongalicia]

thanks for sharing

[danishcookies]

many thanks for your help.

[ozora]

Hi all advisors,

need some help in this question.
I have some sweets. If I pack them in groups of 5, I will have 3 extra sweets. If I pack them in groups of 8, I will have 7 extra sweets. What is the min number of sweets do I have?
I used the following method and i got 23 but the answer key is 63 using the same method. why 63 and not 23?

Method :
x5 : 5, 10, 15, 20, 25, 30
----------------------------
+3: 8, 13 , 18, 23, 28, 33

x8: 8, 16, 24
-----------------
+7: 15, 23, 31

any advise?

[MathIzzzFun]

ozora:

Hi all advisors,

need some help in this question.
I have some sweets. If I pack them in groups of 5, I will have 3 extra sweets. If I pack them in groups of 8, I will have 7 extra sweets. What is the min number of sweets do I have?
I used the following method and i got 23 but the answer key is 63 using the same method. why 63 and not 23?

Method :
x5 : 5, 10, 15, 20, 25, 30
----------------------------
+3: 8, 13 , 18, 23, 28, 33

x8: 8, 16, 24
-----------------
+7: 15, 23, 31

any advise?

hi

u r right

there was a discussion on similar problem before, and here are my views on that question - http://www.flickr.com/photos/62167097@N02/5711589516/in/photostream

cheers.

[ozora]

MathIzzzFun:

ozora:

Hi all advisors,

need some help in this question.
I have some sweets. If I pack them in groups of 5, I will have 3 extra sweets. If I pack them in groups of 8, I will have 7 extra sweets. What is the min number of sweets do I have?
I used the following method and i got 23 but the answer key is 63 using the same method. why 63 and not 23?

Method :
x5 : 5, 10, 15, 20, 25, 30
----------------------------
+3: 8, 13 , 18, 23, 28, 33

x8: 8, 16, 24
-----------------
+7: 15, 23, 31

any advise?

hi

u r right

there was a discussion on similar problem before, and here are my views on that question - http://www.flickr.com/photos/62167097@N02/5711589516/in/photostream

cheers.

thanks MathIzzzFun.. thought my method is wrong. okie now get the idea

[Champion]

Hi! Happy New Year to all experts here! :grphug:


Need help with the following 2 Maths Questions and appreciates your help with the a model diagram; :thankyou: very much.

1) Lionel bought a shirt with 2/7 of his money. He also bought a pair of jeans that cost $23 more than the shirt. If he had $10 left, how much did the pair of jeans cost?


2) 7/10 of the spectators in a stadium are adults.
There are 184 more adults than children.
(a) How many children are there altogether?
(b) 5/6 of the children are boys, how many more boys than girls are there?

[MathIzzzFun]

Champion:

Hi! Happy New Year to all experts here! :grphug:


Need help with the following 2 Maths Questions and appreciates your help with the a model diagram; :thankyou: very much.

1) Lionel bought a shirt with 2/7 of his money. He also bought a pair of jeans that cost $23 more than the shirt. If he had $10 left, how much did the pair of jeans cost?


2) 7/10 of the spectators in a stadium are adults.
There are 184 more adults than children.
(a) How many children are there altogether?
(b) 5/6 of the children are boys, how many more boys than girls are there?

Hi

rushing out.. here's the model for Q1...

http://i41.tinypic.com/2i0rpcp.jpg\">

cheers.

[tianzhu]

Champion:

2) 7/10 of the spectators in a stadium are adults.
There are 184 more adults than children.
(a) How many children are there altogether?
(b) 5/6 of the children are boys, how many more boys than girls are there?

Hi

While waiting for the arrival of 财神, I’ll try to give some pointers for drawing the MD.

Draw 7 boxes to show the number of adults and 3 boxes to show the number of children.

So we’ve 4 boxes ------ 184 and hence 1 box ----- 46

(a)Number of children ----- 46*3 ----- 138

For the second part of the question, draw 5 boxes to show the number of boys and 1 box to show the number of girls.

Number of boys ----- 5 parts
Number of girls ----- 1 part

6 parts ----- 138
1 part ------ 23

4 parts ----- 23*4 ----- 92

(b)There are 92 more boys than girls.

PS ----- The boxes for (a) and (b) are of different measures and kinds, hence different sizes.

If you need the MD, please let me know.I'll do it at a later time.

Wishing everyone in KSP, a very Happy and Prosperous Chinese New Year.

Best wishes

[MathIzzzFun]

Champion:

Hi! Happy New Year to all experts here! :grphug:


Need help with the following 2 Maths Questions and appreciates your help with the a model diagram; :thankyou: very much.

1) Lionel bought a shirt with 2/7 of his money. He also bought a pair of jeans that cost $23 more than the shirt. If he had $10 left, how much did the pair of jeans cost?


2) 7/10 of the spectators in a stadium are adults.
There are 184 more adults than children.
(a) How many children are there altogether?
(b) 5/6 of the children are boys, how many more boys than girls are there?

Hi

here's the MD for Q2 ..

http://i43.tinypic.com/5ewnxf.jpg\">

cheers.