Welcome to Test-paper.info
Sunday, January 21 2018 @ 02:33 AM 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 Help needed
 | Printable Version
 By: dolphin (offline)  Thursday, May 08 2008 @ 10:17 PM CDT (Read 1661 times)
dolphin

1) There are 85 plates of fried rice for 80 people. Each adult eats 2 plates of fried rice and every three children share 1 plate of fried rice. How many adults and children are there?

2) 20 boys and girls sold tickets for a variety show. Each ticket was sold at \$5.Each boy sold 5 tickets and each girl sold 3 tickets. The amount collected by the boys was \$20 more than the amount collected by the girls. Find a) how many girls were there in the group b) how many tickets were sold altogether?

Thank You

Junior

Registered: 12/31/06
Posts: 15

 By: anooravi (offline)  Friday, May 09 2008 @ 08:31 AM CDT
anooravi

Solution for Sum 1 (By guess and check)
Adults (2) No.of plates Children (1/3) No.of plates Total plates
20 x 2 = 40 60 x 1/3 = 20 60 X
23 x 2 = 46 57 x 1/3 = 19 65 X
32 x 2 = 64 48 x 1/3 = 16 80 X
35 x 2 = 70 45 x 1/3 = 15 85(answer)
There are 35 adults and 45 children.
* Since 3 children share 1 plate I assume that each child has 1/3 of rice plate.
There is also another method for solving the same problem.

Newbie

Registered: 12/31/06
Posts: 12

 By: anooravi (offline)  Friday, May 09 2008 @ 08:57 AM CDT
anooravi

Solution for Sum 2 (By Guess and Check)
Boys (5) Tickets(5) Cost Girls (3) Tickets(5) Cost Difference
10 x 5 = 50 50x5=250 10 x 3 = 30 30x5=150 100 X
5 x 5 = 25 25x5=125 15 x 3 = 45 45x5=225 100 X
8 x 5 = 40 40x5=200 12 x 3 = 36 36x5=180 20

a) There were 12 girls in the group.
b) There were (40+36)= 76 tickets sold altogether.

Newbie

Registered: 12/31/06
Posts: 12

 By: dolphin (offline)  Friday, May 09 2008 @ 09:47 AM CDT
dolphin

Are there any other methods besides Guess and Check to solve these problems?

1) There are 85 plates of fried rice for 80 people. Each adult eats 2 plates of fried rice and every three children share 1 plate of fried rice. How many adults and children are there?

2) 20 boys and girls sold tickets for a variety show. Each ticket was sold at \$5.Each boy sold 5 tickets and each girl sold 3 tickets. The amount collected by the boys was \$20 more than the amount collected by the girls. Find a) how many girls were there in the group b) how many tickets were sold altogether?

Junior

Registered: 12/31/06
Posts: 15

 By: dolphin (offline)  Friday, May 09 2008 @ 09:58 AM CDT
dolphin

1) Four girls, A, B, C and D, each have some stamps. The number of stamps A has is 1/2 of the total number of stamps B, C and D have. The number of B has is 1/3 of the total number of A, C and D have. The number of stamps C has is 1/4 of the total number of stamps A, B and D have. If D has 78 stamps, find the total number of stamps A & B have altogether.

2) At first, Jane had 2/3 as many stamps as Kelly. After Jane bought another 20 stamps and Kelly lost 29 stamps, Jane now has 4/5 as many stamps as Kelly. Find the number of stamps Kelly had at first.

Thank You

Junior

Registered: 12/31/06
Posts: 15

 By: anooravi (offline)  Wednesday, May 14 2008 @ 02:11 AM CDT
anooravi

I was tied up with mid years and hence the delay in posting the solution.
1) Four girls, A, B, C and D, each have some stamps. The number of stamps A has is 1/2 of the total number of stamps B, C and D have. The number of B has is 1/3 of the total number of A, C and D have. The number of stamps C has is 1/4 of the total number of stamps A, B and D have. If D has 78 stamps, find the total number of stamps A & B have altogether.

Solution
Amount of stamps A has = 1/3 of the total stamps
Amount of stamps B has = 1/4 of the total stamps
Amount of stamps C has = 1/5 of the total stamps
Amount of stamps D has = 1 Ã¢Ë†â€™ 1/3 Ã¢Ë†â€™ 1/4 Ã¢Ë†â€™ 1/5 = 13/60
13/60 of the total stamps Ã¢â€ â€™ 78 stamps
1/60 of the total stamps Ã¢â€ â€™ 78/13 = 6 stamps
Total stamps = 6 X 60 = 360
A : 1/3 X 360 = 120
B : 1/4 X 360 = 90
The total number of stamps A and B have altogether is 120 + 90 = 210 stamps

Newbie

Registered: 12/31/06
Posts: 12

 By: anooravi (offline)  Wednesday, May 14 2008 @ 02:33 AM CDT
anooravi

2) At first, Jane had 2/3 as many stamps as Kelly. After Jane bought another 20 stamps and Kelly lost 29 stamps, Jane now has 4/5 as many stamps as Kelly. Find the number of stamps Kelly had at first.

Solution :

Jane Kelly

2 :3 Before ratio
+ 20 (bought 20) Ã¢Ë†â€™ 29 ( lost 29 )
4 : 5 After ratio

( first step is to equalise the after ratio)

After equalising, it will be as follows:

10 : 12
+ 100 stampsÃ¢Ë†â€™ 116 stamps
20 : 20

10 units + 100 stamps = 12 units Ã¢Ë†â€™ 116 stamps
2 units Ã¢â€ â€™ 216 stamps
1 unit Ã¢â€ â€™ 108 stamps
Kelly had 3 units at first
3 units Ã¢â€ â€™ 108 X 3 = 324
Kelly had 324 stamps at first

Newbie

Registered: 12/31/06
Posts: 12

 By: dolphin (offline)  Thursday, May 29 2008 @ 10:50 PM CDT
dolphin

1)Danny has \$160 more than Alan. After giving 1/10 of his money to Alan, he now has 3 times as much money than Alan. How much money do they have in the first place?

2)There are 600 children in Group A and 30% of them are boys.
There are 400 children in Group B and 60% of them are boys.
After some children are transferred from group B to Group A, 40% of the children in Group A and 60% of the children in Group B are boys.
How many children are transferred from Group B to Group A?

Junior

Registered: 12/31/06
Posts: 15

 All times are CST. The time is now 02:33 am.
 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