Tutor MathsGuru: Ask me for your burning Maths questions!
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Need help on this qn. Thanks.
The volume of water in bottle P was 3/5 of that in bottle Q. After 60ml of water was added to bottle P and 20ml was poured away from bottle Q, the amt of water in bottle P was 3/4 that in bottle Q.
What was the amt in each bottle at first? -
Please help on this P2 qn, thanks!
In fairyland, every elf has either 1 or 2 eyes. Every elf also has either 1,2 or 3 feelers.
The elves in fairyland greet each other when they have either more eyes or feelers than the other.
a) how many elves are there in fairyland?
b) at a party where all elves attends, how many greetings will there be? -
Hi MathIzzzFun
Appreciate your help . Thanks !
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sanie:
Old ratio P : Q = 3 : 5Need help on this qn. Thanks.
The volume of water in bottle P was 3/5 of that in bottle Q. After 60ml of water was added to bottle P and 20ml was poured away from bottle Q, the amt of water in bottle P was 3/4 that in bottle Q.
What was the amt in each bottle at first?
P [--][--][--] (= 3*[--])
Q [--][--][--][--][--] (=5*[--])
After 60ml of water was added to bottle P and 20ml was poured away from bottle Q
P [--][--][--] + [---60---]
Q [--][--][--][--][--] - [-20-]
New ratio P : Q = 3 : 4
P [--][-20-][--][-20-][--][-20-]
Q [--][-20-][--][-20-][--][-20-][--][-20-]
Compare the models of Q ,
[--][--][--][--][--] - [-20-] -----> [--][-20-][--][-20-][--][-20-][--][-20-]
[--] -----> 100
3*[--] -----> 300
5*[--] -----> 500
the amount of water in P at first = 300 ml (Ans)
the amount of water in Q at first = 500 ml (Ans) -
jieheng:
Thank you so much! Your model is much easier to understand
Old ratio P : Q = 3 : 5sanie:
Need help on this qn. Thanks.
The volume of water in bottle P was 3/5 of that in bottle Q. After 60ml of water was added to bottle P and 20ml was poured away from bottle Q, the amt of water in bottle P was 3/4 that in bottle Q.
What was the amt in each bottle at first?
P [--][--][--] (= 3*[--])
Q [--][--][--][--][--] (=5*[--])
After 60ml of water was added to bottle P and 20ml was poured away from bottle Q
P [--][--][--] + [---60---]
Q [--][--][--][--][--] - [-20-]
New ratio P : Q = 3 : 4
P [--][-20-][--][-20-][--][-20-]
Q [--][-20-][--][-20-][--][-20-][--][-20-]
Compare the models of Q ,
[--][--][--][--][--] - [-20-] -----> [--][-20-][--][-20-][--][-20-][--][-20-]
[--] -----> 100
3*[--] -----> 300
5*[--] -----> 500
the amount of water in P at first = 300 ml (Ans)
the amount of water in Q at first = 500 ml (Ans)
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softcoach:
HiHi MathIzzzFun
Appreciate your help . Thanks !
you are welcome :lol:
cheers. -
Need help
2) a figure is made up of 2 identical squares. 1/6 of each square is shaded. What fraction of the whole figure is shaded?
Ans: 1/11
3) 3/5 are $50. 2/3 of the remainder are $10 and $5 notes and the rest are $2 notes. He had twenty four $2 notes. The number of $10 notes is 1/7 of the number of $5 notes. What is the number of $10 notes he has?
Ans: 4
Thank you :? -
Chan09:
Take the cake and divide into 6 parts.Need some help :stupid:
Harry and 5 friends share a cake equally for tea. If Harry gave away 2/3 of her share, what fraction of the cake had she left?
Ans: 1/18
So Harry gets 1/6 of the cake. Since she gave away 2/3 of her share, she has 1/3 * 1/6 = 1/18 of the cake left. -
Hi, pls help to solve the following Maths sums with model, thks.
David had some apples in a box.
He sold 47 apples.
He bought another 25 apples and threw away 60 rotten ones.
He then had 123 apples left.
How many apples did David have at first. -
Alan, Ben, Caleb , Danny and Eric took part in a Weiqi competition. At the moment, the number of games played is shown below:
Alan has played 4 games
Ben has played 3 games
Caleb has played 2 games
Danny has played 1 game.
If all contestants are required to play against one another, how many game has Eric played so far?
A. 1
B. 2
C. 3
D. 4
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