Tutor MathsGuru: Ask me for your burning Maths questions!

[2DMommy]

Pls help me with this question :


John and Peter had an equal number of stickers. After Peter gave 27 stickers to John, John had 4 times as many stickers as Peter. How many stickers did Peter have at first?\t

Thanks !

[capricorn28]

Hi All :


Please help me with the following question.

Jane bought just enough money to buy 2kg of Flour and 5kg of Rice. If she bought 5kg of Flour and 2kg of Rice, she will have $9.30 left. In the end, Jane changed her mind and spent all her money on 7kg of Flour and some lollipops at $0.62 each instead. How many lollipops did she buy?

Thank you

[Brenda10]

2DMommy:

Pls help me with this question :


John and Peter had an equal number of stickers. After Peter gave 27 stickers to John, John had 4 times as many stickers as Peter. How many stickers did Peter have at first?\t

Thanks !

Hi, DD working:

J : P
5 : 5 (Equal number)
8 : 2 (After Peter gave 27, John had 4 times as many stickers as Peter)

3u = 27
1u = 9

Therefore Peter at first have 5 x 9 = 45 stickers

Thank you

[Brenda10]

wkong:

Hi All:


I need help for the following:

Box A contains some 50 cents and Box B contains some 20 cents coins. There are 8 more coins in Box B than in Box A. The amount in Box A is $6.50 more than the amount in Box B. How many 50 cents coins are there in Box A?

Thanks.

Hi, dd working:

A B
0.50 0.20

20= $10.00, 28=$5.60, Diff =$4.40
25 =$12.50, 33=$6.60, Diff =$5.90
27 =$13.50, 35=$7.00, Diff = $6.50 (correct)

There are 27 of 50 cents coin in box A.

Thank you.

[iFruit]

capricorn28:

Hi All :


Please help me with the following question.

Jane bought just enough money to buy 2kg of Flour and 5kg of Rice. If she bought 5kg of Flour and 2kg of Rice, she will have $9.30 left. In the end, Jane changed her mind and spent all her money on 7kg of Flour and some lollipops at $0.62 each instead. How many lollipops did she buy?

Thank you

cost of Flour = F
cost of Rice = R
Lollipops = L

2F+5R - 5F -2R = 9.30
3R-3F = 9.30
R-F=3.10
R = F+3.10

Total money = 2F +5(F+3.10) = 7F+15.50---->(1)

Jane bought 7F + 0.62L--->(2)

From(1) and (2)
0.62L = 15.50
L = 15.5/0.62 = 25

[2DMommy]

Another question,


In a box, there are yellow, red and green beads, 1/3 of the beads in the box are yellow. There are 30 more red beads than yellow beads. The rest of the 15 beads are green. How many beads are there altogether?

[Hifive]

Hi everyone


Need help with the following questions:
Source : Nan Hua SA2 2009 Paper 2 - P5

1. Gretel has $6.80. This amount of money was just enough to buy 6 oranges and 10 pears. Instead, she bought 10 oranges and 6 pears and had $0.80 left. Find the cost of 1 orange.

2. The ratio of the number of Faye’s balls to the number of Ian’s ball was 1:5. Then their father gave Ian 12 more balls and Faye 5 more balls. The ratio of the number of Faye’s balls to the number of Ian’s balls became 1:4. How many more balls did Ian have than Faye in the end?

Thanks in advance.

[Brenda10]

Hifive:

Hi everyone


Need help with the following questions:
Source : Nan Hua SA2 2009 Paper 2 - P5

1. Gretel has $6.80. This amount of money was just enough to buy 6 oranges and 10 pears. Instead, she bought 10 oranges and 6 pears and had $0.80 left. Find the cost of 1 orange.

Thanks in advance.

Hi Hifive

Did this question (Q11.)before but we get the answer of $0.30 which is differnet from the answer key ($0.2) provided.

Here was dd working:

6o + 10p + 10o + 6p = $12.80
16o + 16p = $12.80
1o + 1p = $0.80 (find out 1 set)

10o + 6p = $6.00
(6 sets of 1o + 1p )+ 4o = $6.00
6 * $0.8 + 4o = $6.00
$4.8 + 4o = $6.00
4o = $6.00 - $4.80
4o = $1.20
1o = $0.30

Appreciate help to verify is the answer of $0.30 correct.

Thank you

[Brenda10]

Hifive:

Hi everyone


Need help with the following questions:
Source : Nan Hua SA2 2009 Paper 2 - P5

2. The ratio of the number of Faye's balls to the number of Ian's ball was 1:5. Then their father gave Ian 12 more balls and Faye 5 more balls. The ratio of the number of Faye's balls to the number of Ian's balls became 1:4. How many more balls did Ian have than Faye in the end?

Thanks in advance.

Q13. DD working:


F:I
1:5
+5 +12
1:4


4u = 20
5u = 12
1u = 8

I = 5 * 8 + 12
= 52

F = 1* 8 + 5
= 13

52 - 13 = 39

Hence Ian has 39 balls more than Faye in the end.

Do the checking: 13:52 = 1:4

Thank you

[Hifive]

Hi Brenda


Thanks for your help.

For question 1, ds also got $0.30.

For question 2, can you pls explain how to get 4u = 20 ?

Thanks!