Welcome to Test-paper.info
Thursday, January 18 2018 @ 03:55 PM CST
 Select a Forum » General Chat » Primary 1 Matters » Primary 2 Matters » Primary 3 Matters » Primary 4 Matters » Primary 5 Matters » Primary 6 Matters » Question, Feedback and Comments » Education Classified
 Forum Index >  Test Paper Related >  Primary 6 Matters P6 Volume Question
 | Printable Version
 By: KCTAN (offline)  Friday, July 20 2012 @ 10:29 AM CDT (Read 1218 times)
KCTAN

Hi,

Would greatly appreciate if someone could guide me through this question:

Tank A was completely filled with water.
3/4 of the water from Tank A was poured into Tank B and could only fill 1/3 of it.
If the capacity of Tank B is 5000cm3 more than the capacity of Tank A and the base area
of Tank A was 250cm2, find the height of Tank A.

Thank you.

Newbie

Registered: 11/02/11
Posts: 9

 By: echeewh (offline)  Saturday, July 21 2012 @ 08:15 PM CDT
echeewh

Hey KCTan,

Following pls find my worked solution :

(3/4) A = (1/3) B

Applying <Equal Concept>, we have ...

(3/4) A = (3/9) B

Hence, A = 4u ; B = 9u (= capacities of A, B in units)

Given that capacity of Tank B is 5000cm3 more than the capacity of Tank A, we have ...

9u - 4u --> 5000
5u --> 5000
1u --> 1000

So capacity of Tank A = 4u --> 4 x 1000 = 4000 cm3

Given that base area of Tank A was 250 cm2,

Height (A) = Capacity (Vol in A) ÷ Base Area (A)
= 4000 ÷ 250
= 16 cm

===================================

Trust this helps.

Do let me know again if this answer does not match your Answerkey or if you have further clarification. Btw, is this a 3-mark question?

Cheers,
Edward

Active Member

Registered: 04/21/11
Posts: 627

 By: KCTAN (offline)  Sunday, July 22 2012 @ 08:22 AM CDT
KCTAN

Hi Edward,

Wow! Thank you so so much for your help on this.
Your explanation is very clear to me.
I understand it now.

I do not know how many marks this question is but
it is one of the many problem sums in the revision paper given by teacher.

Thank you and have a good week ahead!

Newbie

Registered: 11/02/11
Posts: 9

 All times are CST. The time is now 03:55 pm.
 Normal Topic Locked Topic Sticky Topic
 New Post Sticky Topic w/ New Post Locked Topic w/ New Post
 View Anonymous Posts Able to Post HTML Allowed Censored Content