Q&A - PSLE Math

[Michaelia0816]

Help with this question,


Dawei has $180 and Yawen has $55. After their aunt gave each of them an equal amount of money, Dawei had twice as much money as Yawen. How much money did their aunt give to each of them?

[Shimmer]

Q1.Daniel had 40% more stickers than Brandon. Daniel and Brandon each gave 20%of their stickers to Calvin. As a result ,Calvin stickers increased by 80%. If Daniel has 20 more stickers than Calvin in the end, how many stickers did Brandon have at first?

Q2.At a confererence made up of speakers and participants , there were 20% more men than women. The ratio of male speakers to female speakers was 8:5. There was an equal number of male and female participants.
A)Find the ratio of male speakers to male participants at the conference.
B)Halfway,40 male participants left the conference and another 60 female participants joined the conference.In the end,there was 3/4 as many male participants as female participants remaining behind.How many speakers were there at the conference?

[Michaelia0816]

tianzhu:

Michaelia0816:

Then, how about this, and also not using guess and check,


Each day, Rahman saves $0.90. 6 days after Rahman starts saving, Minah starts saving $0.20 more than Rahman each day. When Minah has saved $4.60 more than Rahman, how much money has Rahman saved?

In this case, the numbers of days is not the same, then what should the statement be?

Hi

This question is quite similar to that of the “catching up” type of speed question.

Starting with a simple diagram helps.

Rahman has a head start of 6 days ------- 6*90 ------- 540 cents

Minah saves 20 cents more than Rahman each day

540 + 460 ------- 1000

1000/20 ------- 50

Minah will save $4.60 more than Rahman in 50 days

50*90 ------- 4500

Rahman ------- 4500+ 540 ------- 5040 ------$50.40

Best wishes

Hi! Tianzhu, pls check, I think it should be $26.10 instead!

[peggy]

Please help.



Nicole received more money than Tricia from their mother. 40% of Tricia’s money is $16 less than 25% of Nicole’s money. If Nicole gives 35% of her money to Tricia, Nicole will have $12 less than Tricia.

A. How much money does Tricia has?
B. How many per cent more money does Nicole has than Tricia at first?
Round off your answers to the nearest 2 decimal places.


Thanks.

[Michaelia0816]

Michaelia0816:

Help with this question,


Dawei has $180 and Yawen has $55. After their aunt gave each of them an equal amount of money, Dawei had twice as much money as Yawen. How much money did their aunt give to each of them?

Need help, need it by today!

[charsen]

Hi


Since the aunt gave each of them them same amount of money,their difference is the same.We call this’Constant Difference’.
In this case,we can solve with that method easily.
Difference between to of them at first-180 -55=125
1Unit-125,as the differnce is constant.
2Unit-125*2=250
Money gave to each of them-250-180=70(ANS)
Cheers

[charsen]

Hi


Since the aunt gave each of them them same amount of money,their difference is the same.We call this'Constant Difference'.
In this case,we can solve with that method easily.
Difference between to of them at first-180 -55=125
1Unit-125,as the differnce is constant.
2Unit-125*2=250
Money gave to each of them-250-180=70(ANS)
Cheers





quote=\"Michaelia0816\"]

Michaelia0816:

Help with this question,

Dawei has $180 and Yawen has $55. After their aunt gave each of them an equal amount of money, Dawei had twice as much money as Yawen. How much money did their aunt give to each of them?

Need help, need it by today![/quote]

[Michaelia0816]

Thanks!, can helps with another question I posed later on in a few minutes

[Michaelia0816]

Charsen or Tianzhu, Mrs Ang has a packet of ice cream sticks for her activity sticks for an activity in her Art lesson. If she gives each pupil 10 ice cream sticks, she will have 10 ice cream sticks left. If she gives each pupil 8 ice- cream sticks, she will have 80 ice cream sticks left. How many ice cream sticks are there in the packet?

[Michaelia0816]

And this question too,


Patrick, Devi and Jiamin each have the same number of beads. How many beads must Devi give to Patrick and Jiamin so that Patrick has 20 beads more than Devi and Jiamin has 4 fewer beads than Patrick?