Q&A - P4 Math

[elisammom]

MathIzzzFun:

elisammom:

Hi,

Doreen has ome $5 and %10 notes. The notes add up to $470 in total. There are four more $5 notes than $10 notes. How many $5 notes does Doreen have?

solution:
5x4 = 20
470-20 =450
450/15 = 30
30+4 = 34

Pls advise, why 30 + 4 is equal to nos of $5 notes?

Thanks.

When you remove the 4 extra $5 notes, there will be equal number of $5 and $10 left with total amount = $470-$20 = $450

one group of (1x$5 note+ 1X$10 note) = $15
$450 / $15 = 30 groups
there is 1x$5 note in one group and 4x$5 was removed first,
so total number of $5 notes = 30 x 1 + 4 = 34

cheers.

:thankyou:

[ssmummy]

MathIzzzFun:

elisammom:

Hi,

Doreen has ome $5 and %10 notes. The notes add up to $470 in total. There are four more $5 notes than $10 notes. How many $5 notes does Doreen have?

solution:
5x4 = 20
470-20 =450
450/15 = 30
30+4 = 34

Pls advise, why 30 + 4 is equal to nos of $5 notes?

Thanks.

When you remove the 4 extra $5 notes, there will be equal number of $5 and $10 left with total amount = $470-$20 = $450

one group of (1x$5 note+ 1X$10 note) = $15
$450 / $15 = 30 groups
there is 1x$5 note in one group and 4x$5 was removed first,
so total number of $5 notes = 30 x 1 + 4 = 34

cheers.

Same method applied too
:goodpost:

[Starkidz]

Hi i need help for this question.When i check the answer it is wrong.Can someone help me to solve.The answer is (a) $1.80,(b)$283.50.


A tennis racket and 3 tubes of tennis ball cost $299.70.Each tube contained 3 tennis balls.The tennis racket cost $281.70 more than each ball.

(a) Find the cost each ball.
(b) Find the cost of the tennis racket.

Best wishes
Sara


:thankyou:

[Starkidz]

smartmummy:

Saravana:

Can help me with this question?i can't figure out the answer.Please explain with working.


Carol paid $72 for 2 blouses and 1 dress.5 blouses cost as much as 2 dresses.How much more did she pay for each dress than a blouse?

Thanks
Sara

1 blouse=2/5 dress
blouse [][]
dress [][][][][]

2blouses+1dress=$72
4u+5u=$72
1 u=$8




:thankyou:
ans : 3*$8=$24

[kiasuMay11]

Saravana:

Hi i need help for this question.When i check the answer it is wrong.Can someone help me to solve.The answer is (a) $1.80,(b)$283.50.


A tennis racket and 3 tubes of tennis ball cost $299.70.Each tube contained 3 tennis balls.The tennis racket cost $281.70 more than each ball.

(a) Find the cost each ball.
(b) Find the cost of the tennis racket.

Best wishes
Sara


:thankyou:

3 tubes = 3X3 = 9 balls
1 racket = 281.70 + 1 balls
Therefore, $299.70 = $281.70 + 10balls
=> 1ball = $1.8
=> 1 racket = $283.5

[Starkidz]

kiasuMay11:

Saravana:

Hi i need help for this question.When i check the answer it is wrong.Can someone help me to solve.The answer is (a) $1.80,(b)$283.50.


A tennis racket and 3 tubes of tennis ball cost $299.70.Each tube contained 3 tennis balls.The tennis racket cost $281.70 more than each ball.

(a) Find the cost each ball.
(b) Find the cost of the tennis racket.

Best wishes
Sara


:thankyou:

3 tubes = 3X3 = 9 balls
1 racket = 281.70 + 1 balls
Therefore, $299.70 = $281.70 + 10balls
=> 1ball = $1.8
=> 1 racket = $283.5

:thankyou:

[Jamesbond]

http://i48.tinypic.com/11uiv5y.jpg\">


Pl help me solve this.... :faint:

[verykiasumummy]

Jamesbond:

http://i48.tinypic.com/11uiv5y.jpg\">


Pl help me solve this.... :faint:

hi offering my help..

always remember the hard rule, use bigger area minus smaller area to find shaded area.

80 x 57.8 = 4624m2 (smaller area, field)
80 + 1.1 + 1.1 = 82.2m (length of bigger area, field and path)
57.8 + 1.1 + 1.1 = 60m (breadth of bigger area, field and path)
82.2 x 60 = 4932m2 (bigger area)
4932 - 4624 = 308m2 (area of path)

Ans = 308m2

[htn]

Hi, pls help me to solve this question.

Tank A and Tank B each contain some fish. If John transferred 12 fish from Tank A to Tank B, both tanks will have the same number of fish. If he transferred 4 fish from Tank B to Tank A instead, Tank A will have 5 times as many fish as Tank B. How many fish are there in each tank?

TIA

[Charnic]

4U = 28

U = 7.

Initial no of fishes in A is 11 and B is 35.