
By: shin (offline) Wednesday, October 20 2010 @ 07:05 AM CDT (Read 1628 times)



shin 
Hi,
Appreciate someone can help me on the below 3 qtns
1) A Kettle has 420ml more water than a jug.
When 150ml of water is poured from the jug into the kettle, there are 4 times as much water in the kettle as the jug.
How much water is there in the jug now ?
the ans is 240ml but i cannot get this ans. My ans is 190ml
2) Jane loved eating sweets. Each day, she would eat 2 more sweet than the previous day.
If she ate total of 27 sweets in 3 days, how many such sweets did she start with on the first day ? Ans is 7 sweets
3) Alvin, Belinda and Candy had $900 altogether. Alvin spent 1/2 of his money,
Belinda spent $60 and Candy spent 3 times the amount Alvin spent. If they had the same amount of money left,
how much did Alvin have at first ? Ans is $240
Thanks in advance .

Newbie
Registered: 12/31/06 Posts: 9





By: veronica2566 (offline) Wednesday, October 20 2010 @ 10:48 AM CDT



veronica2566 
See attachment for answers.
Hope you are able to understand.

Junior
Registered: 06/23/10 Posts: 24





By: shin (offline) Thursday, October 21 2010 @ 12:39 AM CDT



shin 
Quote by: veronica2566See attachment for answers.
Hope you are able to understand.
Hi Veronica,
I think u have miss out the attachment

Newbie
Registered: 12/31/06 Posts: 9





By: veronica2566 (offline) Thursday, October 21 2010 @ 01:46 AM CDT



veronica2566 
I did attach the file, or so I thot! How do I do the attachment? Can't understand the instructions.

Junior
Registered: 06/23/10 Posts: 24





By: suz855 (offline) Thursday, October 21 2010 @ 01:52 AM CDT



suz855 
1) A Kettle has 420ml more water than a jug.
When 150ml of water is poured from the jug into the kettle, there are 4 times as much water in the kettle as the jug.
How much water is there in the jug now ?
the ans is 240ml but i cannot get this ans. My ans is 190ml
Before
Kettle > 1u+420
jug >1u
After
kettle> 1u + 420 + 150 > replace 1u as 1part + 150 + 420 +150 = 4parts **
jug > 1u  150 >1 part
3 parts = 720
1part = 240ml
2) Jane loved eating sweets. Each day, she would eat 2 more sweet than the previous day.
If she ate total of 27 sweets in 3 days, how many such sweets did she start with on the first day ? Ans is 7 sweets
Day 1 > 1u
Day 2 > 1u+2
Day 3 > 1u + 4
3u + 6 = 27, 3u = 21, therefore, 1u=7
3) Alvin, Belinda and Candy had $900 altogether. Alvin spent 1/2 of his money,
Belinda spent $60 and Candy spent 3 times the amount Alvin spent. If they had the same amount of money left,
how much did Alvin have at first ? Ans is $240
At first
Alvin > 2u (1u left, 1u spent)
Belinda > 1u+60 (1u left, 60 spent)
Candy > 4u (1u left, 3u spent)
7u + 60 = 900, 7u=840, 1u=120
Alvin 2u at first thus 2x120 = $240

Junior
Registered: 12/31/06 Posts: 16





By: veronica2566 (offline) Thursday, October 21 2010 @ 02:02 AM CDT



veronica2566 
Got it. Mine is similar but with model answers.

Junior
Registered: 06/23/10 Posts: 24





By: shin (offline) Friday, October 22 2010 @ 02:25 AM CDT



shin 
Thanks Veronica and Suz855 for your explaination and model. Really appreciated

Newbie
Registered: 12/31/06 Posts: 9





By: sethchew (offline) Friday, October 22 2010 @ 09:07 PM CDT



sethchew 
Quote by: shinHi,
Appreciate someone can help me on the below 3 qtns
1) A Kettle has 420ml more water than a jug.
When 150ml of water is poured from the jug into the kettle, there are 4 times as much water in the kettle as the jug.
How much water is there in the jug now ?
the ans is 240ml but i cannot get this ans. My ans is 190ml
2) Jane loved eating sweets. Each day, she would eat 2 more sweet than the previous day.
If she ate total of 27 sweets in 3 days, how many such sweets did she start with on the first day ? Ans is 7 sweets
3) Alvin, Belinda and Candy had $900 altogether. Alvin spent 1/2 of his money,
Belinda spent $60 and Candy spent 3 times the amount Alvin spent. If they had the same amount of money left,
how much did Alvin have at first ? Ans is $240
Thanks in advance .
150 x 2 = 300
300 + 420 = 720
720/3 = 240 240 is the ans

Junior
Registered: 10/22/10 Posts: 15



