Q&A - P4 Math

[Maths Hub]

vsk:

Can someone help with this ?


Ming Xun had an equal number of blue and green marbles. After giving away 36 blue marbles and buying another 84 green marbles. he found that he had 4 times as many green marbles as blue marbles. How many blue marbles did Ming Xun have at first ?

Thank you.

5 units --> 84 + 36 = 120
1 unit --> 120 ÷ 3 = 40 (Blue at last)
40 + 36 = 76 (Blue in the end)

[Xiao Hu]

vsk:

Can someone help with this ?


Ming Xun had an equal number of blue and green marbles. After giving away 36 blue marbles and buying another 84 green marbles. he found that he had 4 times as many green marbles as blue marbles. How many blue marbles did Ming Xun have at first ?

Thank you.

Please see
http://i47.tinypic.com/mt56iu.jpg\">
4u-1u=84+36
3u =120
1u=40

So at first, Blue marbles= 1u+36=76.

[Jamesbond]

Xiao Hu:

vsk:

Can someone help with this ?


Ming Xun had an equal number of blue and green marbles. After giving away 36 blue marbles and buying another 84 green marbles. he found that he had 4 times as many green marbles as blue marbles. How many blue marbles did Ming Xun have at first ?

Thank you.

Please see
http://i47.tinypic.com/mt56iu.jpg\">
4u-1u=84+36
3u =120
1u=40

So at first, Blue marbles= 1u+36=76.

My Ds answer is also 76.

[vsk]

Mathshub/Xiao Hu/Jamesbond,


:thankyou: Appreciate very much.

[Sharmum]

verykiasumummy:

1 - 2/5 = 3/5 (remainder)
3/5 x $480 = $288
1 - 1/4 = 3/4 (spent on 4 blouses)
3/4 x $288 = $216 (4 blouses)
$216 / 4 = $54 (each blouse)

ans : $54

verykiasummy & SarCha,

Many thanks for your help!


:thankyou:

[verykiasumummy]

Sharmum:

verykiasumummy:

1 - 2/5 = 3/5 (remainder)
3/5 x $480 = $288
1 - 1/4 = 3/4 (spent on 4 blouses)
3/4 x $288 = $216 (4 blouses)
$216 / 4 = $54 (each blouse)

ans : $54

verykiasummy & SarCha,

Many thanks for your help!


:thankyou:

u r very welcomed...

[doraemo]

Can someone help me with this ?


Ray and Serene have a total of $1183 in their savings accounts. Serene and Tim have a total of $1124 while Ray and Tim have a total of $961.
How much savings does Tim have?

[Charnic]

doraemo:

Can someone help me with this ?


Ray and Serene have a total of $1183 in their savings accounts. Serene and Tim have a total of $1124 while Ray and Tim have a total of $961.
How much savings does Tim have?

R+S = 1183 ----------(1)
S+T = 1124 ---------- (2)
R+T =961 ------------- (3)
Add 2 and 3
R+S+2T = 2085
Compare the new equation to 1
1183+2T = 2085
2T = 902
T = 401

[doraemo]

Thank you, CNS!

[doraemo]

Here’s another one:-

A class has an equal number of boys and girls. ½ of the boys do not wear glasses and 15 girls do not wear glasses. 12 of the pupils wear glasses. How many pupils are there in the class?