Q&A - PSLE Math

[MathIzzzFun]

bobsg01:

Hi MathIzzzFun,


Thanks you.

:boogie: :boogie: :boogie:

hi bobsg01,

avec plaisir :lol:

cheers.

[raghupavithra]

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

[raghupavithra]

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

[corneyAmber]

raghupavithra:

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

Y = 5 x 2/3 X
Y = 10/3 x 930 = 3100

So 80%Y = 0.8 x 3100 = 2480

[pixiedust]

Please help me with these 2 maths questions, much thanks :


(1) Mrs. Tan bought 4 times as many toy guns as teddy bears.
She spent $1750 altogether.
A toy gun cost $10 less than a teddy bear.
The total cost of toy guns was $490 more than the cost of teddy bears.

(a) how much did Mrs. Tan spend on the teddy bears ? [ans: $630, no problem]
(b) how much did one teddy bear cost ? [ans: $18, need help]

(2) Sandra had twice as many apples as oranges as first. She removed 4 apples and 3 oranges each time. In the end, there were 18 apples and 1 orange left. How many fruits did Sandar have at first ? [ans: 75, need help]

[MathIzzzFun]

pixiedust:

Please help me with these 2 maths questions, much thanks :


(1) Mrs. Tan bought 4 times as many toy guns as teddy bears.
She spent $1750 altogether.
A toy gun cost $10 less than a teddy bear.
The total cost of toy guns was $490 more than the cost of teddy bears.

(a) how much did Mrs. Tan spend on the teddy bears ? [ans: $630, no problem]
(b) how much did one teddy bear cost ? [ans: $18, need help]

(2) Sandra had twice as many apples as oranges as first. She removed 4 apples and 3 oranges each time. In the end, there were 18 apples and 1 orange left. How many fruits did Sandar have at first ? [ans: 75, need help]

Hi

For Q2, hope this helps - http://www.flickr.com/photos/62167097@N02/5691800011/in/photostream

Q1 was answered before in this forum- http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=280&p=407427&hilit=%241750#p407427

cheers.

[raghupavithra]

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

[corneyAmber]

raghupavithra:

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

What is the answer? Anything tricky?

[small]

ksi:

raghupavithra:

2/3​ of X is equal to 1/5​ of Y. Find the value of 80% of Y if X is 930. how to do this sum

Y = 5 x 2/3 X
Y = 10/3 x 930 = 3100

So 80%Y = 0.8 x 3100 = 2480

HTH, MD....

http://i56.tinypic.com/20frlzo.jpg\">

[KRR]

Can u help me with this problem.


Two boys A and B shared some chocolate bars.

If A gives 8 bars of chocolate to B,
A will have 6 times as many chocolates as B.

However, if B gives 12 bars of chocolate to A,
B will have 1/11 of the number of bars A has.

Find the total number of chocolate bars they had.

Thanks in advance.
KRR