Q&A - P5 Math

[jas3angels]

Hi,


Please help to solve this.

There were some marbles in a box. Jenny took out 2/5 of the marbles and an additional 6 more. Then William took out 1/6 of the remaining marbles and an additional 5 more. There were 25 marbles left in the box. How many marbles were in the box at first? :thankyou:

[chloecube]

quekcc:

chloecube:

when Trish gives 10 sweets to Jane, she will have four times as many sweet as Jane. when she gave 20 sweet to Jane, she will have thrices as many sweets as Jane. how many sweet do they have altogether?

http://i49.tinypic.com/zm0ha8.jpg\">

thks for the model!
i understand now

[chloecube]

speedmaths.com:

chloecube:

there were 4 times as many red pens as blue pens in a box. 415 red pens and 45 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?

Hi,

You may wish to look at the numbers again.

May we know the source of this question?

Cheers


speedmaths.com


.

sorry, typo error.
shld be
there were 4 times as many red pens as blue pens in a box. 415 red pens and 46 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?

[jieheng]

chloecube:

there were 4 times as many red pens as blue pens in a box. 415 red pens and 46 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?

R [---------][---------][---------][---------]

B [---------]

R [][][][46][][][][46][][][][46][][][][46]

B [][][][46]

[][][46][][][][46][][][][46][][][][46] --> 415

11u + 46*4 --> 415
11u --> 231
1u --> 21

No of blue pens were there in the beginning = 3u + 46 = 3*21 + 46 = 109 (Ans)

[chloecube]

jieheng:

chloecube:

there were 4 times as many red pens as blue pens in a box. 415 red pens and 46 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?

R [---------][---------][---------][---------]

B [---------]

R [][][][46][][][][46][][][][46][][][][46]

B [][][][46]

[][][46][][][][46][][][][46][][][][46] --> 415

11u + 46*4 --> 415
11u --> 231
1u --> 21

No of blue pens were there in the beginning = 3u + 46 = 3*21 + 46 = 109 (Ans)

thank you so much !!!

so all for the typo earlier :oops:

[BigDevil]

There are 45 peach tarts, 120 strawberry tarts and 150 chocolate tarts. If all the tarts are placed into the least number of boxes such that there are equal number of each type of tarts in each box, how many tarts are there in each box ?

[MathIzzzFun]

BigDevil:

There are 45 peach tarts, 120 strawberry tarts and 150 chocolate tarts. If all the tarts are placed into the least number of boxes such that there are equal number of each type of tarts in each box, how many tarts are there in each box ?

this question is not structured properly... it would be more logical to replace \"least\" with \"maximum\".

cheers.

[janicelhl]

At a science competition , 25 questions were given. Each correct question earned 4 points,and 2 points were deducted for each incorrect answer. Luang Hong answered all but one of the problems , receiving a score of 66.how many correct answers did she have?

[chloecube]

Grandma bought an equal number of apple and kiwi. The apple were 8 for $4 and kiwi 5 for $6. She paid $84 more for kiwi than apple. How much did she paid in all.

[chloecube]

I work out to a)$204 b)240

not sure if correct