Q&A - P5 Math

[2Transformer]

Hi, can someone help me on this question?



Keith had a number of books for sale. He sold 560 books on Saturday. On Sunday, he sold 1/5 of the remaining books and was left with 40 books. How many books did he have at first?

[veraclari]

Thanks A lot Mathizzfun!!!


I’ve seen quite a few qn and answers but still didn’t understand WHY they did it this way but the link to ur page sure help explaining LoTs!!!

Thanks!

[vsk]

In a hall, 1/3 of the pupils were lined up in 7 long rows and 4/9 of the pupils were lined up in 12 short rows. The rest of the pupils were seated on the stage. Each long row had 10 more pupils than each short row.


Q: How many pupils were lined up in rows and what is the fraction of pupils seated on the stage ?

Kindly help with this question ?. Thank you.

[MathIzzzFun]

vsk:

In a hall, 1/3 of the pupils were lined up in 7 long rows and 4/9 of the pupils were lined up in 12 short rows. The rest of the pupils were seated on the stage. Each long row had 10 more pupils than each short row.


Q: How many pupils were lined up in rows and what is the fraction of pupils seated on the stage ?

Kindly help with this question ?. Thank you.

Fraction of pupils seated on stage = 1-1/3-4/9 = 2/9

1/3 of pupils = 3/9 of pupils
7 long rows = 7 short rows + 7 x 10 = 7 short rows + 70
7 short rows + 70 --> 3/9 of pupils

4/9 of pupils in 12 short rows
12 short rows --> 4/9 of pupils
9 short rows --> 3/9 of pupils

so, 9 short rows = 7 short rows + 70
1 short row --> 35
1 long row --> 45

Pupils in rows --> 7 x 45 + 12 x35 = 735

cheers.

[2Transformer]

2Transformer:

Hi, can someone help me on this question?



Keith had a number of books for sale. He sold 560 books on Saturday. On Sunday, he sold 1/5 of the remaining books and was left with 40 books. How many books did he have at first?

Pls help me to solve this question. Thank you.

[2Transformer]

I have another question.



A watch cost $120 more than a bag. Janet used 1/3 of her money to buy the bag and was then short of $50 to buy the watch. How much did Janet have at first?

[Oldschool]

2Transformer:

2Transformer:

Hi, can someone help me on this question?



Keith had a number of books for sale. He sold 560 books on Saturday. On Sunday, he sold 1/5 of the remaining books and was left with 40 books. How many books did he have at first?

Hi,

http://i44.tinypic.com/2zyizqg.jpg\">

Regards

[Oldschool]

2Transformer:

I have another question.



A watch cost $120 more than a bag. Janet used 1/3 of her money to buy the bag and was then short of $50 to buy the watch. How much did Janet have at first?

Hi,

http://i44.tinypic.com/nxw3gw.jpg\">

Regards

[vsk]

MathIzzzFun:

vsk:

In a hall, 1/3 of the pupils were lined up in 7 long rows and 4/9 of the pupils were lined up in 12 short rows. The rest of the pupils were seated on the stage. Each long row had 10 more pupils than each short row.


Q: How many pupils were lined up in rows and what is the fraction of pupils seated on the stage ?

Kindly help with this question ?. Thank you.

Fraction of pupils seated on stage = 1-1/3-4/9 = 2/9

1/3 of pupils = 3/9 of pupils
7 long rows = 7 short rows + 7 x 10 = 7 short rows + 70
7 short rows + 70 --> 3/9 of pupils

4/9 of pupils in 12 short rows
12 short rows --> 4/9 of pupils
9 short rows --> 3/9 of pupils

so, 9 short rows = 7 short rows + 70
1 short row --> 35
1 long row --> 45

Pupils in rows --> 7 x 45 + 12 x35 = 735

cheers.

:thankyou: MathIzzzFun. Appreciate your help very much.

[2Transformer]

Oldschool:

2Transformer:

[quote=\"2Transformer\"]Hi, can someone help me on this question?



Keith had a number of books for sale. He sold 560 books on Saturday. On Sunday, he sold 1/5 of the remaining books and was left with 40 books. How many books did he have at first?

Hi,

http://i44.tinypic.com/2zyizqg.jpg\">

Regards[/quote]
Oldschool :thankyou: